OBESITY

This study tests a new medicine called NNC0487-0111 in about 5,600 people who have both heart failure and obesity. Participants receive either the drug or a placebo as a weekly injection. The goal is to see if the drug reduces the risk of heart failure worsening, hospitalization,…

This study tests whether a gentle electrical current applied to a brain area involved in fullness can reduce food intake and promote weight loss. Over 4 weeks, 148 obese adults will receive either real or fake stimulation while following a reduced-calorie diet. The goal is to see…

This study tests a temporary stomach balloon called Orbera365 to help people with obesity lose weight. About 144 adults with a BMI between 28 and 50 who have not succeeded with diet and exercise will get the balloon. The main goal is to see if at least 5% of body weight is lost a…

This study compares two lifestyle programs for people with type 2 diabetes or prediabetes: one using a ketogenic diet and the other a low-fat diet. Over 12 months, researchers will track changes in weight, blood sugar, blood pressure, and heart health. The goal is to see which di…

This study tests a virtual weight management program for 60 adults with obesity and advanced kidney disease who want to lose weight to become eligible for a kidney transplant. Participants either join the program (which includes coaching and a weight-loss medication called semagl…

This early-stage trial tests a new drug called ALN-6222 in 88 adults with obesity (BMI 30-40). Participants receive a single injection of either the drug or a placebo. The main goal is to check safety and how the body processes the drug, not weight loss. It is the first time this…

This study tests whether limiting food intake to an 8-hour window each day (without counting calories) can reduce liver fat in people with obesity and a type of fatty liver disease called MASLD. Seventy-two participants will either follow this eating pattern plus standard advice,…

This study tests a once-weekly injection called NNC0487-0111 in 300 adults with overweight or obesity and moderate-to-severe obstructive sleep apnea who use a breathing device. The goal is to see if the drug helps with weight loss and reduces breathing pauses during sleep. Partic…

This study tests whether mobile health technology, like smartphone apps and activity trackers, can help overweight or obese African American women increase their physical activity. Participants will wear a wrist device to track steps and sleep, use a study app, and may receive co…

This study tests whether a simple, home-based breathing exercise program can improve brain health and reduce inflammation in adults with obesity. Thirty participants will do 8 weeks of high- or low-resistance breathing training, like weightlifting for the breathing muscles. Resea…

This phase 3 trial is testing a once-weekly injection called enicepatide in 300 Chinese adults who are obese or overweight, with or without type 2 diabetes. The drug works by mimicking two gut hormones to reduce appetite and improve blood sugar control. Participants will receive …

This study looks at whether inducing labor at 39 weeks of pregnancy is better than waiting for labor to start naturally in women with a BMI of 30 or higher. The goal is to see if early induction lowers the chance of needing a C-section. About 1,900 women in Denmark will take part…

This study tests whether a combination of a special diet, omega-3 and L-carnitine supplements, and resistance exercise can improve muscle quality and reduce fat in veterans with HIV and obesity. The trial will enroll 70 participants and measure changes in muscle density, metaboli…

This study tests two versions of the experimental drug cagrilintide in 234 adults with overweight or obesity. Participants receive either version D or version B by injection once a week for about 6 months. The goal is to see how the drug is processed in the body, not to measure w…

This study tests an experimental drug called ARO-INHBE in 180 adults with obesity, some of whom also have type 2 diabetes. The drug is given as a shot under the skin, either alone or combined with the existing weight-loss drug tirzepatide. The main goal is to check safety and how…

This study tests whether a virtual weight management program that includes a support person (like a family member or friend) helps Veterans with obesity lose weight. 320 Veterans and their partners will participate in 8 virtual sessions over 14 weeks. The main goal is to see if t…

This study tests a once-weekly injection called NNC0487-0111 in 300 adults with overweight or obesity and moderate-to-severe obstructive sleep apnea who do not use a CPAP machine. The goal is to see if the drug helps with weight loss and reduces breathing pauses during sleep. Par…

This study tests whether using a handheld breathing trainer for a few minutes each day can lower blood pressure in adults with obesity. Researchers will compare high-resistance versus very-low-resistance breathing exercises over eight weeks. The goal is to find a time-efficient w…

This study tests a new version of sleeve gastrectomy (a weight loss surgery) that adds a Nissen fundoplication to reduce acid reflux. Researchers will compare 30-day complication rates between the new technique and standard sleeve gastrectomy in 100 adults with obesity. The goal …

This study tracks 200 adults with obesity in the EU who choose to get the Orbera365 intragastric balloon. The balloon is placed in the stomach and filled with saline to help people feel full and eat less. Researchers will monitor serious side effects and how much weight participa…

This study tests a new once-weekly medicine called eloralintide to help people with obesity or overweight and type 2 diabetes lose weight. About 1035 adults will receive either the drug or a placebo for around 75 weeks. Researchers will measure changes in body weight, fat, waist …

This Phase 2 trial is testing several experimental drugs—including tirzepatide and others—for long-term weight management in adults with obesity or overweight. About 1,481 participants will receive one of the drugs or a placebo. The goal is to see if these treatments are safe and…

This phase 3 trial tests whether adding tirzepatide (a weight-loss drug) to mirikizumab (an anti-inflammatory drug) helps people with moderate-to-severe ulcerative colitis who are also overweight or obese. The goal is to see if the combination can reduce both gut symptoms and bod…

This phase 3 trial is testing a new weekly injection called enicepatide for weight loss in 2000 adults with obesity or overweight who do not have type 2 diabetes. Participants will receive either the drug or a placebo for 72 weeks. The main goal is to see how much weight they los…

This study tests whether a minimally invasive procedure called endoscopic sleeve gastroplasty (ESG), which reduces stomach size by 70%, can help reverse fatty liver disease (MASH) in people with obesity. Researchers will compare ESG plus lifestyle changes to lifestyle changes alo…

This study tests two experimental drugs, macupatide and eloralintide, alone or together, to help adults with obesity or overweight and type 2 diabetes lose weight. About 200 participants will receive the drugs or a placebo for 48 weeks. The main goal is to see how much weight the…

This study tests a new once-weekly injection called eloralintide to help adults with obesity or overweight lose weight. About 1980 people who do not have type 2 diabetes will take part for up to 75 weeks, with some continuing for 2 more years. The goal is to see if the drug safel…

This study tests a new weekly injection called eloralintide in 900 adults with obesity or overweight who are already taking a weekly incretin drug (like Ozempic or Wegovy) but still have excess weight. Participants will receive either eloralintide or a placebo for about 80 weeks …

This study tests an experimental drug called KDS2010 for weight loss in 75 overweight or obese adults. Participants take the drug or a placebo daily for 12 weeks. The main goal is to see how much weight they lose and if the drug is safe. It is a Phase 2a trial, meaning it is stil…

This study is testing a new approach for people with obesity and type 2 diabetes. It combines two procedures done through the mouth: one uses mild electric pulses to regenerate the lining of the upper intestine, and the other reduces stomach size by stitching it like a sleeve. Th…

This Phase 3 trial is testing a new weekly injection called enicepatide for weight loss in 1600 people who are obese or overweight and also have type 2 diabetes. The drug works by mimicking natural hormones that help control appetite and blood sugar. Participants will receive eit…

This study compares weight loss using semaglutide (a drug) versus a calorie-restricted diet in 100 people with obesity and heart failure with reduced ejection fraction. The goal is to see which approach better improves peak oxygen uptake, a measure of exercise capacity, after 52 …

This phase 3 trial tests a weekly injection called eloralintide in 800 adults with moderate-to-severe obstructive sleep apnea who are also overweight or have obesity. The study looks at whether the drug can improve sleep apnea symptoms and help with weight loss. Participants are …

This study tests a once-monthly injection called berobenatide to help adults with overweight or obesity lose weight. About 954 participants will receive either the drug or a placebo for 20 months. The goal is to see if the drug is safe and effective for weight loss, including in …

This study looks at whether strength training (like weightlifting) can help adults taking GLP-1 obesity drugs keep their muscle and improve mental health. Forty inactive adults with obesity will either do supervised resistance exercise twice a week for 3 months or just take the m…

This study tests whether adding the weight-loss drug tirzepatide to the Crohn's drug mirikizumab helps people with moderate-to-severe Crohn's disease who are also overweight or have obesity. About 290 adults will receive either mirikizumab alone or mirikizumab plus tirzepatide. T…

This Phase 2b trial is testing whether two experimental drugs, macupatide and eloralintide, can help adults with obesity or overweight lose weight. About 400 participants will receive either one or both drugs or a placebo for 64 weeks. The study measures weight change and safety,…

This early-phase study tests a new oral drug called GS-4571 in healthy people, non-diabetic obese individuals, and non-obese people with type 2 diabetes. The main goals are to see how the drug moves through the body, how safe it is, and how food or acid-reducing drugs affect it. …

This early-stage trial is testing a new drug called AMG 513 in 80 adults with obesity. The main goal is to see if the drug is safe and how the body handles it. Participants will receive either the drug or a placebo by injection, and researchers will monitor for side effects and m…

This study tests a new weekly injection called KAI-9531 to help people with obesity or overweight lose weight. It is for adults who do not have diabetes but have weight-related health problems like high blood pressure or sleep apnea. About 1800 participants will receive either th…

This study tests a once-daily pill called orforglipron to help teenagers with obesity or overweight lose weight. About 150 teens will take either the pill or a placebo for 18 months, along with lifestyle advice. The goal is to see if the pill safely reduces body mass index (BMI) …

This study tests whether a weekly injection of tirzepatide, combined with healthy eating and exercise, helps adolescents with obesity and related conditions like high blood pressure or prediabetes lose weight and improve their health. About 300 teens who completed a prior study c…

This Phase 3 trial tests a new drug called KAI-9531, given as a weekly injection, in 1700 adults who are overweight or obese and have type 2 diabetes. The study compares KAI-9531 to a placebo to see if it leads to greater weight loss and better blood sugar control over 76 weeks. …

This phase 3 study is testing whether a new drug called maridebart cafraglutide (MariTide) can reduce the risk of heart attacks, strokes, and death in people with heart disease who are overweight or obese. About 12,800 participants will receive either the drug or a placebo, added…

This study tests an experimental drug called BGE-102 in 160 adults with obesity and heart risk factors. The goal is to see if it lowers inflammation (measured by hsCRP) safely. Participants take either BGE-102 or a placebo daily for 12 weeks.

This Phase 3 trial is testing an oral medication called orforglipron for chronic weight management in children and teens with obesity or overweight. The study will enroll 125 participants who have already tried lifestyle changes without success. The goal is to see if the drug is …

This study tests a new weekly injection called KAI-9531 to help people with obesity lose weight. It involves 1,200 adults who do not have diabetes and compares KAI-9531 to semaglutide (a known weight-loss drug) and a placebo. The main goal is to see how much weight participants l…

This study tests whether the drug maridebart cafraglutide can reduce liver fat and body weight in adults who are overweight or obese and have high liver fat. Participants will also follow a reduced-calorie diet and increase physical activity. The trial involves 180 adults and las…

This study tests an experimental oral medication, KAI-7535, taken once daily to help people with obesity or overweight lose weight. About 320 adults with at least one weight-related condition (like high blood pressure or sleep apnea) will receive either the drug or a placebo for …

This study is testing whether two different versions of the drug survodutide are equally effective in the body. It involves 80 healthy overweight or obese adults who will receive both formulations in a crossover design. The goal is to see if the new formulation matches the origin…

This study looks at whether eating most of your daily calories in the morning or the evening leads to better long-term weight loss. About 174 adults with obesity will follow a reduced-calorie diet and exercise plan for 12 months. Researchers will track weight, sleep, and appetite…

This early-stage study tests a new drug called LY3971297 in healthy volunteers, people with obesity and high blood pressure, and those with reduced kidney function. The main goal is to check for side effects and measure how the drug moves through the body. The study involves up t…

This study tests an experimental drug called ALN-2232, given alone or together with the approved weight-loss drug tirzepatide, in 156 adults with obesity. The goal is to see if the combination is safe and leads to more weight loss than either drug alone. Participants will receive…

This phase 3 trial tests whether switching from common GLP-1 weight-loss drugs to a new medication called maridebart cafraglutide can help adults with obesity or overweight maintain their weight loss. About 300 participants who have already lost at least 10% of their body weight …

This study tests a program called MiWeigh that helps people with obesity and related conditions like diabetes or high blood pressure lose weight. Participants get a personalized plan from a doctor, access to a website, and weekly check-ins. The goal is to see if this approach lea…

This early-stage trial tests a new drug called AZD1043 in 104 healthy adults who are overweight or obese. The goal is to check the drug's safety and how the body processes it. Participants receive either the drug or a placebo by injection. The study includes people of Japanese an…

This study tests a new medicine, maridebart cafraglutide, for adults with obstructive sleep apnea who are overweight or obese and already use a CPAP machine. The goal is to see if the drug can reduce breathing pauses during sleep and help with weight loss over 52 weeks. About 250…

This study investigates whether certain genetic variations influence how much weight people lose when taking the FDA-approved weight loss drug Contrave (naltrexone/bupropion). Over 40 weeks, 120 adults with obesity will first follow a calorie-restricted diet for 12 weeks, then ad…

This study tests two experimental drugs, PF-08653945 and PF-08653944, given alone or together, for weight loss in adults with overweight or obesity. About 872 participants will receive either the drugs or a placebo injection. The main goal is to see how much weight they lose over…

This study will test if a 'produce prescription' program, called Eat Well, helps veterans with high blood pressure and food insecurity. About 1,500 veterans in North Carolina will either get money for fruits and vegetables for 6 or 12 months, or standard care. Researchers will tr…

This study tests whether a lifestyle program tailored to a person's specific obesity type helps them lose more weight and keep it off. Researchers at Mayo Clinic will enroll 228 adults with obesity and give them either a standard or a personalized diet and exercise plan for 12 mo…

This pilot study tests a 6-month program that teaches families about healthy eating and activity, and delivers fresh fruits and vegetables to their homes. About 30 children aged 4 to 10 with obesity, along with their caregivers, will take part. The main goal is to see if the prog…

This study tests whether a program called Sisters for Heart Health can help farmworker women ages 18-50 reduce stress, feel less isolated, and improve their heart health. Participants will join weekly peer support groups led by trained community health workers for 10 weeks. The s…

This early-stage study is testing an experimental drug, MBX 4291, in 124 adults with obesity. The main goal is to check the drug's safety and how the body processes it. Participants will receive either the drug or a placebo as a shot under the skin, and researchers will monitor f…

This study looks at whether adding a GLP-1 weight-loss drug after bariatric surgery helps people with obesity lose more weight and avoid regaining it. About 200 Chinese adults aged 18-60 who are having sleeve gastrectomy will be randomly assigned to get the drug or not. The goal …

This study tests whether adding appetite-suppressant drugs (topiramate or phentermine) to lifestyle counseling can help people who have regained weight after bariatric surgery. About 120 adults who had sleeve gastrectomy or gastric bypass at least 18 months ago and regained at le…

This study tests a program that helps people with obesity who are waiting for a kidney transplant lose weight. Participants will receive education, a calorie tracking app, a continuous glucose monitor, a weight scale, and a food scale. The goal is to see if this program is practi…

This pilot study tests a device that gently stimulates a nerve in the ear (taVNS) to help overweight or obese people who didn't lose much weight after 12 weeks of diet and exercise. 24 participants will get either real or sham stimulation twice daily for 12 more weeks, while cont…

This early-stage trial tests a new drug called NNC0497-0040 in healthy people, those with overweight or obesity, and people with type 1 diabetes who are also overweight. The goal is to see if the drug is safe and tolerable when given as a weekly injection. About 146 participants …

This Phase 3 trial tests whether the drug HRS-7535 can lower blood pressure better than a placebo in 648 adults with hypertension who are also overweight or obese. Participants will take the drug or placebo for up to 48 weeks, and researchers will measure changes in blood pressur…

This early-stage study tests an experimental oral drug called RO7795081 in 40 healthy overweight or obese adults. The main goals are to check safety and how the drug interacts with common statins (rosuvastatin and pitavastatin). Participants will receive the drug or a placebo in …

This study tests a weight loss program for adult survivors of childhood acute lymphoblastic leukemia (ALL) who are overweight or have obesity. Participants receive a weekly injection of tirzepatide plus remote, supervised resistance exercise three times a week for 28 weeks. The g…

This study examines weight loss in adults who took semaglutide (a prescription weight management drug) as part of their routine care. Researchers will analyze medical records from about 35,000 people with overweight or obesity to see how much weight they lost and whether they ach…

This study tests a new drug called NNC0487-0111, given as a once-weekly injection, to see if it helps people with obesity lose weight safely. About 1,150 adults who have tried to lose weight before will receive either the drug or a placebo. The main goal is to measure how much bo…

This study tests whether combining two experimental drugs, MET233 and MET097, can help adults with obesity or overweight lose weight, including those with type 2 diabetes. About 381 participants will receive either the drug combination or a placebo to check safety and how well th…

This study looks at how obesity affects recovery from post-COVID conditions in older Veterans. Researchers will test if a weight loss program with diet and exercise can reduce inflammation and improve physical function and quality of life. The study involves 150 Veterans, some wi…

This study tests whether a new medicine called NNC0487-0111, given as a weekly injection, is safe and effective for weight loss in adults with obesity. About 600 participants will receive either the active drug or a placebo (dummy injection) for comparison. The main goal is to me…

This study tests a once-weekly injection called NNC0487-0111 in 630 adults who are overweight or obese and have type 2 diabetes. Participants receive either the active drug or a placebo for about a year. The main goal is to see how much weight they lose, with additional checks on…

This Phase 3 study tests whether a new drug called CagriSema helps people with severe obesity (with or without type 2 diabetes) lose more weight than the existing drug semaglutide. About 2,500 participants will receive either CagriSema or semaglutide for 83 weeks. The main goal i…

This study tests whether eating all meals within a 9-hour window each day for 12 weeks can improve insulin sensitivity and other heart health markers in 100 adults with obesity and prediabetes. Participants will be randomly assigned to either a 9-hour eating window or a 14-hour w…

This study tests a non-invasive brain stimulation method (temporal interference stimulation) aimed at improving metabolism in people with stable bipolar disorder who also have obesity. Researchers will measure changes in key metabolic molecules like GLP-1. The study enrolls 70 ad…

This Phase 3 trial tests a drug called IBI362 in people with mild to moderate high blood pressure who are also overweight or obese. Participants receive weekly injections of either the drug or a placebo for 48 weeks. The main goal is to see if IBI362 lowers blood pressure more th…

This phase 3 trial tests whether maridebart cafraglutide (MariTide) can reduce heart failure events like hospitalizations and urgent visits in people with obesity and a specific type of heart failure (preserved or mildly reduced ejection fraction). About 5,056 participants will r…

This study follows overweight and obese adults aged 45-65 to see if a tailored program of counseling, supervised exercise, and digital tools helps them lose weight and improve heart health over 18 months. Participants are compared to a group that only gets general written advice.…

This early-phase study aims to see if a natural substance called angiotensin-(1-7) can improve how the body uses insulin in people with obesity, insulin resistance, and high blood pressure. About 26 adults aged 18-60 will receive the peptide or a placebo infusion, and researchers…

This study tests an experimental drug called CS060380, taken with the weight-loss drug semaglutide, in adults with both fatty liver disease (MASH) and obesity. About 120 participants will be randomly assigned to get either CS060380 or a placebo for 36 weeks, then everyone gets CS…

This study tests a weight loss program for 522 low-income adults with obesity in Louisiana. Participants receive health coaching, digital self-monitoring tools, and group support to find community wellness resources. The goal is to see if this approach leads to greater weight los…

This early-stage study tests the safety and tolerability of a new injectable drug called ABBV-295 in 48 adults with obesity. Participants will receive either the drug or a placebo over several weeks. Researchers will monitor side effects, changes in body weight, and how the drug …

This study tests tirzepatide, a once-weekly injection, in 344 Indian adults with type 2 diabetes or obesity. Over 46 weeks, researchers will check for serious side effects and measure weight loss and blood sugar control. The goal is to see if this drug is safe and effective for t…

This study looks at how well the drug tirzepatide works in everyday life for people with obesity (without diabetes) or type 2 diabetes (with or without obesity). About 160 adults in Paraguay will take the drug as part of their regular care and be followed for 52 weeks. Researcher…

This Phase 3 trial tests a new medicine called MET097, given as a weekly injection, to help adults with overweight or obesity and type 2 diabetes lose weight. About 999 people will take part, with two-thirds getting the real drug and one-third getting a placebo. The study lasts a…

This study is testing whether e-cigarettes or nicotine replacement therapy (patches and lozenges) can help obese smokers quit or reduce smoking. Sixty participants will use one of the two products for 8 weeks, and researchers will track how many cigarettes they smoke, their carbo…

This study tests whether taking tirzepatide (Mounjaro/Zepbound) for three months before bariatric surgery reduces inflammation and leads to better weight loss and fewer complications. Fifty adults with obesity scheduled for surgery will either receive the drug or standard diet an…

This study tests a 16-week behavioral program called T1DAL, designed specifically for teens with type 1 diabetes who have overweight or obesity. About 50 teens will be randomly assigned to either the program or usual care. The program includes virtual group sessions and one-on-on…

This study directly compares two popular weight-loss medications, tirzepatide and semaglutide, in 120 adults with obesity and metabolic syndrome. Participants will be randomly assigned to one drug and monitored for 12 months using advanced body scans, blood tests, and AI analysis…

This study tests whether eating all your food within 8 hours each day (time-restricted eating) helps people with obesity keep weight off after losing it. About 212 participants will follow a calorie-restricted diet to lose 8-10% of their body weight, then be split into two groups…

This study tests whether empagliflozin, a drug used for diabetes, can reduce chronic inflammation in people with obesity and metabolic syndrome. Researchers will measure immune cells and blood vessel function in 74 adults. The goal is to find a new way to lower heart disease risk…

This study tests a personalized diet and exercise program guided by a smartphone app in 140 obese adults with coronary heart disease. Participants receive custom meal plans and daily weight tracking to help them lose weight safely. The goal is to see if this approach improves wei…

This study tests whether eating 3 whole eggs every day for 4 weeks can improve metabolic health and choline levels in adults with obesity. Twenty participants aged 30-65 with a BMI over 30 will eat the eggs while continuing their normal lifestyle. Researchers will measure liver h…

This Phase 1 study looks at how CagriSema, semaglutide, and cagrilintide affect muscle health in 100 adults aged 50-70 with obesity and slightly high blood sugar. Participants will receive one of the drugs or a placebo for up to 15 months. The main goal is to measure how well mus…

This early study looks at whether taking tirzepatide (Mounjaro) after sleeve gastrectomy surgery helps people lose more weight and improve conditions like diabetes and high blood pressure. About 42 adults with obesity will be split into two groups: one gets surgery alone, the oth…

This study tests a telehealth program to help cancer survivors quit smoking, lose weight, and get more active. About 1500 participants will either get coaching sessions or just information. The goal is to see which approach works better for improving long-term health.

This study tests whether adding a special light treatment (antimicrobial photodynamic therapy) to standard deep cleaning helps people with obesity and gum disease. 24 participants will receive either standard cleaning alone or cleaning plus the light therapy. Researchers will che…

This study tests whether using a sit-stand desk at work can improve insulin sensitivity and reduce diabetes risk in 198 overweight, sedentary adults with prediabetes or other risk factors. Participants are randomly assigned to stand 2 or 3 hours per day at a sit-stand desk, or to…

This 12-week study tests whether replacing highly processed soy foods (like soy burgers) with less processed options (like tofu or edamame) can lower blood pressure and improve heart health in 300 adults with obesity, hypertension, and often type 2 diabetes. Participants use a di…

This early-stage trial is testing a new drug, HM17321, to see if it is safe and how the body processes it. About 90 healthy and obese adults will receive either the drug or a placebo as a shot under the skin. The main goal is to check for side effects, not to treat obesity yet.

This trial tests a 9-month program for women who had preeclampsia during their first pregnancy. The program includes online screening, group meetings, and a smartphone app to help monitor blood pressure and weight. Researchers want to see if it improves heart health and promotes …

This study looks at whether a special lifestyle program can help women ages 18-25 with a BMI between 25 and 50 lose weight and reduce inflammation better than standard weight loss advice. About 32 women will take part over 12 months. The goal is to improve long-term health by tar…

This study tests whether a dietary supplement called capsinoid, found in sweet peppers and chilies, can activate brown fat in obese adolescents. Brown fat is a type of body fat that burns calories to produce heat, which may help with weight control. The study will involve 38 teen…

This study tests whether tirzepatide, a drug used for weight loss and diabetes, can slow tumor growth in people with obesity-driven endometrial cancer. About 20 participants will take the drug before their scheduled hysterectomy. Researchers will compare cancer cell activity in t…

This study compares two versions of gastric bypass surgery for people who regained weight or didn't lose enough after an initial sleeve gastrectomy. Researchers will track weight loss, quality of life, and food tolerance over 5 years in 240 adults. The goal is to find out if addi…

This study tests whether semaglutide (Ozempic) helps people with HIV and obesity lose more weight than diet and exercise alone. About 80 participants will receive either semaglutide injections or standard lifestyle advice for 28 weeks. Researchers will also check how the drug aff…

This study tests whether UBT251 is safe and effective for people who are overweight or have obesity. About 333 participants will receive either UBT251 or a placebo injection. The main goals are to check for side effects and measure weight change over time.

This study tests whether resistance exercise and extra protein can help preserve muscle mass in people starting weight-loss drugs like semaglutide or tirzepatide. 232 adults with obesity will be randomly assigned to one of four groups: control, extra protein, exercise, or both. T…

This study tests whether a virtual group exercise program combined with health education can lower fall risk and increase physical activity in older veterans who have both obesity and signs of muscle loss (sarcopenia). About 50 veterans aged 55 and older will take part. The goal …

This study tests if weight-loss surgery is better than standard medical treatment for making nonalcoholic steatohepatitis (NASH) with advanced liver scarring disappear without making the scarring worse. It involves 100 obese adults with NASH and significant liver fibrosis. Partic…

This study is testing whether a daily capsule made from fermented fruits and vegetables (Rutazyme®) can improve body fat, waist size, and blood markers in adults with obesity. Forty participants will take either the supplement or a placebo for 12 weeks. Researchers will measure c…

This study looks at whether adding a GLP-1 drug (semaglutide) to bariatric surgery helps people with severe obesity lose more weight and keep it off. About 200 adults aged 18-60 with a BMI of 35 or higher and related health issues will be followed for a year. The goal is to see i…

This early-stage trial is testing a new drug called brenipatide in 150 healthy people with overweight or obesity. Participants receive different doses of the drug or a placebo as injections under the skin. The study lasts about 42 weeks and aims to see how well the drug works for…

This study tests tirzepatide, a medication already used for obesity, in 60 adults who have both type 1 diabetes and obesity. Participants will receive either tirzepatide or standard care to see if it helps with weight loss and is safe. The goal is to understand if this drug can b…

This study tests whether the drug tirzepatide, given once weekly, helps adults with obesity (but without diabetes) lose weight and avoid developing type 2 diabetes. About 3,000 participants will receive either tirzepatide or standard care for up to 5 years. The goal is to see if …

This study tests whether a dietary supplement made from omega-3 fatty acids (called SPM) can reduce blood vessel damage caused by inflammation in people with obesity and high blood pressure. Researchers will give 60 participants either the supplement or a placebo for 12 weeks and…

This study compares three weight loss approaches in 492 adults with obesity: a new stepped-care program that starts with minimal support and adds help only if needed, the standard Diabetes Prevention Program, and a self-guided option. The goal is to see if the smarter program can…

This study tests whether a mango and chia-based drink can improve the gut bacteria of 100 obese children aged 8 to 16 in Paraguay. The children will drink the beverage for 6 weeks, and researchers will analyze their stool samples before and after to see if the drink changes their…

This phase 3 trial tests an injectable drug called XW003 (Ecnoglutide) in 140 obese adults with obstructive sleep apnea who do not use CPAP machines. The goal is to see if the drug reduces breathing pauses during sleep and helps with weight loss. Participants receive either the d…

This study tests a new digital tool called P3-EX that helps doctors create personalized exercise plans for patients with heart disease risk factors like high blood pressure, diabetes, and obesity. Researchers will recruit 24 doctors and 48 patients to compare the new tool with a …

This study looks at whether a structured weight loss program, with or without added exercise, can improve physical function and emotional well-being in obese veterans who have had a stroke. Researchers will enroll 130 participants aged 35-85 who had a stroke at least 6 months ago…

This study tests an injection called XW003 in 140 obese adults with obstructive sleep apnea who already use a breathing machine (PAP). The goal is to see if the drug reduces breathing pauses during sleep and helps with weight loss. Participants will receive either the drug or a p…

This study compares a new weekly injection, HDM1005, to the existing drug tirzepatide for weight loss in 372 adults with obesity but without diabetes. Participants receive either HDM1005 or tirzepatide for 52 weeks, plus diet and exercise counseling. The main goal is to measure h…

This study tests a modified version of sleeve gastrectomy, a common weight-loss surgery, to see if it can reduce or prevent acid reflux (GERD) that often occurs after the standard procedure. About 44 adults with obesity and GERD will be randomly assigned to receive either the sta…

This study tests whether a strict low-carbohydrate diet combined with lifestyle guidance can help obese men (BMI 30+) lose weight and improve their fertility. Researchers will track weight, semen quality, and reproductive outcomes in 98 men aged 22-40. The goal is to find a non-d…

This early-stage study tests an experimental drug called ARO-ALK7 in 138 adults with obesity, some of whom also have type 2 diabetes. The drug is given as an injection and aims to help with weight loss and blood sugar control. The main goal is to check safety and how the body pro…

This study looks at whether taking blood pressure medication in the morning or evening works better for obese people with high nighttime blood pressure. Obese individuals often have disrupted natural rhythms that raise their heart disease risk. Researchers will give 160 participa…

This study tests whether electro-acupuncture can improve insulin resistance in people with obesity. 60 participants will be randomly assigned to receive either real electro-acupuncture or a sham (fake) version. The main goal is to see if the treatment lowers a key measure of insu…

This early-stage trial tests the safety of a new oral drug, IBI3032, in 104 people. Part A gives a single dose to healthy volunteers, while Part B gives multiple doses over 4 weeks to people with overweight or obesity. The goal is to check for side effects and how the drug moves …

This study tests whether a low dose of the weight-loss drug mazdutide, an intensive lifestyle program, or both can help people with obesity maintain weight loss for a year after initially losing weight with a higher drug dose. About 420 adults with a BMI between 28 and 45 will ta…

This early-stage trial tests a new drug called DA-1726 in 139 people with obesity. The main goal is to check safety and side effects. Researchers will also measure how the drug moves through the body and its effect on weight. Participants receive either the drug or a placebo, and…

This study is testing a low-dose version of the drug semaglutide to help obese adults lose weight and improve heart health. The trial includes 60 Pakistani adults who are obese but do not have diabetes. Participants will receive weekly injections for 24 weeks, along with diet and…

This study tests a remote behavioral program for people who have regained at least 5% of their weight after bariatric surgery. 200 participants will be randomly assigned to either the program or a control group that receives standard dietary advice. The goal is to see if the prog…

This study looks at whether adding extra protein to the diet can help adults with obesity keep their muscle while losing weight with GLP-1 medications. About 130 people aged 30-65 with a BMI over 30 will take part. Half will get standard medication alone, and the other half will …

This study tests two drugs, cagrilintide and semaglutide (alone or together as CagriSema), to help children and adolescents with overweight or obesity lose weight. About 460 participants will receive either the drugs or a placebo for up to 5 years. The main goal is to see how muc…

This study tests whether metformin, a diabetes drug, can help adults with intellectual disabilities who have gained weight from antipsychotic medications. One hundred participants will receive either metformin or a placebo for 24 weeks, along with lifestyle advice. The goal is to…

This study looks at whether a 9-week program led by a dietician can help people with chronic spinal cord injury lose body fat and improve how their body uses insulin. Twenty adults who use wheelchairs will take part in telehealth sessions and have their body composition and insul…

This study looks at whether adding whole-body vibration training to a standard 3-week weight-loss program helps obese teenage boys burn more calories while resting. About 28 boys aged 13-18 will either get the vibration sessions plus the usual rehab (diet, exercise, counseling) o…

This study is testing whether inviting friends, family, or coworkers to join a weight-loss program helps Black or Hispanic adults with obesity lose more weight. The program focuses on improving communication and problem-solving around eating and activity. Researchers will see if …

This study looks at whether adding aerobic or high-intensity interval exercise to a low-glycemic Mediterranean diet can lower inflammation better than diet alone. Researchers will enroll 90 adults aged 18-65 with obesity and non-alcoholic fatty liver disease. Participants will be…

This study tests whether a 6-month program of problem-solving training, community health worker support, and exercise coaching at a YMCA can improve fitness and heart health in 210 adults with type 2 diabetes, obesity, and low income. Participants are compared to those who receiv…

This study tests whether combining tirzepatide (a weight-loss drug) with bimagrumab (an experimental drug) helps people with obesity lose mostly fat while keeping muscle and bone. 63 adults will receive either the combo, tirzepatide alone, or bimagrumab alone for 52 weeks. The go…

This study tests whether a probiotic (a mix of good bacteria) can help adults with obesity lose weight when combined with healthy lifestyle changes. About 100 people aged 18-50 with a BMI between 25 and 40 will take either the probiotic or a placebo for several weeks. Researchers…

This study tests whether a structured lifestyle program, including a total diet replacement phase, can help Malaysian adults with early type 2 diabetes achieve remission. 92 participants will be randomly assigned to either the intensive program or standard care. The goal is to se…

This pilot study tests whether tirzepatide (Zepbound), a drug already used for weight loss, can slow biological aging in adults aged 55 to 70. Ninety participants with a BMI of 27 or higher will be randomly assigned to receive the drug weekly for 24 weeks or no drug, followed by …

This study tests whether a wearable device and AI app can help obese adults lose more weight than standard diet and exercise alone. About 120 participants will follow a 6-month program with coaching and tracking. The goal is to see if technology boosts weight loss and improves he…

This study tests a mobile health program designed to help young adults (ages 18-39) who have survived cancer and are now overweight or obese. Participants will either get a full weight management program through their phone or receive basic digital tools and support. The goal is …

This study tests whether an online weight management program for child care providers can improve the diet and physical activity of 2-5-year-old children in their care. About 84 child care centers and 924 participants (directors, teachers, and children) will take part. Some cente…

This study compares two ways of doing aerobic exercise: before eating (fasted) versus after eating (fed). Over 16 weeks, 40 adults with obesity will follow a supervised exercise program. Researchers will measure changes in body fat, blood fats, blood pressure, and appetite hormon…

This study looks at whether adding protein supplements to a weight-loss plan (diet plus the drug semaglutide) helps overweight or obese adults lose more weight, keep muscle, and avoid gaining weight back. About 140 people will take part in a 3-month program and be followed for 6 …

This study compares two non-drug approaches for helping obese children lose weight: ear acupressure (sticking tiny seeds on ear points) and an intermittent low-carbohydrate diet. Researchers will track changes in body weight and other health markers over three months in 240 child…

This early-stage study at Yale is testing whether a combination of two medications (naltrexone and bupropion) plus cognitive-behavioral therapy can help people who are considering bariatric surgery lose weight and stop smoking. Twenty participants will receive the treatment for f…

This study tests whether a probiotic (Lactobacillus paracasei) or the drug semaglutide can help overweight or obese adults lose weight and improve metabolism. Over 12 weeks, 140 participants will follow a reduced-calorie diet and lifestyle program while taking one of these or a p…

This study tests a once-weekly injection called tirzepatide in about 2,500 adults with obesity or overweight who do not have type 2 diabetes. Participants receive either the drug or a placebo, along with diet and exercise advice. The main goal is to see how much weight they lose …

This study tests a program called HARPP that combines proven treatments for PTSD and weight management into a single therapy for veterans. The goal is to see if this integrated approach leads to greater weight loss and PTSD symptom reduction compared to standard care. The study w…

This study tests whether matching specific weight-loss medications (Wegovy, Contrave, or Qsymia) to a person's obesity type (e.g., 'hungry brain' or 'emotional hunger') helps people with bipolar disorder lose weight safely. One hundred adults with bipolar or schizoaffective disor…

This study tests a new once-weekly injection called retatrutide (LY3437943) to help people with obesity or overweight who also have weight-related health problems like high blood pressure or high cholesterol. About 300 adults will receive either the drug or a placebo, along with …

This study tests whether giving antibiotics to obese first-time mothers during labor induction can lower their chance of needing a C-section. About 787 women with a BMI of 30 or higher will be randomly assigned to receive either antibiotics or a placebo. The goal is to see if thi…

This early-stage study is testing a new medicine called LY4167586 in people who are overweight or have obesity but are otherwise healthy. The main goal is to see if the drug is safe and how the body processes it after a single dose. About 84 participants will be randomly assigned…

This study looks at whether eating three servings of dairy each day (like milk, yogurt, and cheese) can help overweight teens (ages 15-18) and seniors (ages 60-80) improve their body weight, body composition, and blood sugar levels over six months. Participants are randomly assig…

This study looks at whether lifestyle changes (diet and exercise) plus CPAP therapy can reduce eye pressure in people with glaucoma, sleep apnea, and obesity. Forty participants will be split into two groups: one gets CPAP alone, the other gets CPAP plus lifestyle changes. The ma…

This pilot study tests a new procedure called PSAM (Pylorus-Sparing Antral Myotomy) for weight loss in 30 adults with obesity. The procedure involves cutting some stomach muscles to slow down how fast food leaves the stomach, which may help people feel full longer and lose weight…

This study looks at whether a structured approach to managing heart disease risk factors (like high blood pressure, diabetes, and smoking) can improve health outcomes in adults. Researchers will follow 220 patients in a regular cardiology clinic, collecting data on their blood pr…

This study is for Chinese adults aged 18-50 with type 2 diabetes and obesity. It tests a 3-year program that combines medical treatment, counseling, an AI chatbot, and peer support to help with weight loss and improve physical and mental health. The goal is to see if this team-ba…

This study compares two types of gastric bypass surgery for people with severe obesity: the standard Roux-en-Y and a simpler omega (one-anastomosis) bypass with a shorter intestinal loop. Researchers want to see if the omega procedure is just as good at helping patients lose weig…

This study tests whether adults aged 55 and older with obesity can follow a plant-based, high-protein diet while losing weight. Two hundred participants will receive dietary counseling for six months, focusing on cutting 500 calories per day and increasing protein intake. Half wi…

This pilot study tests the safety and effectiveness of tirzepatide (Spartina) for weight loss in 30 obese adults who have had a kidney transplant at least a year ago. Participants receive weekly injections for 24 weeks, with dose adjustments based on tolerance. Researchers will t…

This study compares two ways to help people with overweight or obesity lose weight: avoiding tempting situations (AVOID) or practicing self-control when faced with cravings (RESIST). About 500 adults will be followed for 12 months to see which approach works better for weight los…

This study tests whether a drug called ACM-001.1 can help obese people keep their muscle while taking semaglutide for weight loss, and help them regain muscle after stopping semaglutide. About 120 participants will receive either ACM-001.1 or a placebo alongside semaglutide, and …

This study looks at how the size of the tube (bougie) used during laparoscopic sleeve gastrectomy affects outcomes like weight loss and complications. About 100 adults with obesity will be randomly assigned to receive a small (36-Fr) or extra-large (over 40-Fr) bougie. The goal i…

This study tests whether a program of breathing muscle training and exercise can improve lung function, exercise capacity, and sleep in people who recently had bariatric surgery. Researchers will enroll 52 adults aged 18 to 60. Participants will do supervised breathing exercises …

This study tests whether a weekly injection of semaglutide (a drug used for weight loss and diabetes) can help adults with overweight or obesity avoid gaining weight after they stop smoking. About 197 participants will also use nicotine patches to help them quit. The goal is to s…

This study compares two approaches for adults with severe obesity: an intensive non-surgical program (meal replacements, behavior support, and weight-loss medication) versus bariatric surgery. Researchers will track 500 participants to see which method better improves health and …

This study tests whether taking glutamine, an amino acid, for 8 weeks can improve insulin resistance and reduce irritable bowel syndrome (IBS) symptoms in obese patients. 110 participants will receive either glutamine or a protein powder placebo. Researchers will measure changes …

This study tests a program called FEAST Perinatal Support Program, which helps pregnant women eat healthier and feel better. It is for 40 pregnant adults who qualify for food assistance. The program includes group classes, skill-building, and grocery gift cards to make healthy ea…

This study tests whether mirabegron (a bladder medication) and tadalafil (used for erectile dysfunction) can improve blood sugar control in people with prediabetes and obesity. About 96 adults will take one or both drugs or a placebo for 14 weeks. The goal is to see if these drug…

This study tests a drug called efsubaglutide alfa to help people who are still obese six months after weight-loss surgery lose more weight. About 60 adults aged 18 to 55 with a BMI of 28 or higher will take the drug or a placebo. The main goal is to see how much weight they lose …

This study looks at whether partly replacing animal protein with plant protein can improve blood sugar control in people with type 2 diabetes who are overweight. About 146 adults will follow either a plant-based diet or a standard healthy diet for 24 weeks. The main goal is to se…

This pilot study is testing a smartphone app with telephone coaching to help obese teenagers and young adults lose weight after a stem cell transplant. The study will enroll 20 participants aged 13 to 30 who are at least 100 days post-transplant. The goal is to see if the app can…

This study aims to help overweight or obese taxi and ride-share drivers lose weight through a combination of counseling, text messages, phone support, and self-monitoring tools. Researchers will enroll about 1,785 drivers in New York City to find out which parts of the program wo…

This phase 3 trial tests an injectable drug called HRS9531 in 140 obese adults with moderate-to-severe obstructive sleep apnea who already use a breathing machine (PAP). The study aims to see if the drug reduces the number of breathing pauses during sleep and helps with weight lo…

This study looks at whether people who take GLP-1 receptor agonists (like Ozempic or Wegovy) should continue them after having bariatric surgery. Researchers will compare weight loss, blood sugar control, gut health, and hunger in 150 adults who either keep taking the drug or sto…

This study tests a new magnetic device that creates a shortcut in the small intestine, aiming to help control type 2 diabetes and weight. Only 5 people will take part to see if the procedure is safe and feasible. It is an early-stage trial, so the main goal is to check if the mag…

This study tests two minimally invasive procedures, EndoZip and Apollo ESG, to help people with obesity lose weight. Participants are adults aged 21-65 with a BMI of 30-50 who have not succeeded with non-surgical methods. Both procedures reshape the stomach using an endoscope, fo…

This study is testing a new powered stapler (AEON) used during sleeve gastrectomy, a common weight-loss surgery. The goal is to see if it reduces serious complications like bleeding or leaks from the staple line. About 100 adults having their first sleeve gastrectomy will be enro…

This phase 2 study at the Cleveland Clinic will test whether the weight-loss drug tirzepatide (Zepbound) can help people with obesity and atrial fibrillation (AFib). About 100 participants will receive weekly injections of tirzepatide or a placebo for up to 12 months. The main go…

This phase 3 trial tests whether adding a low dose of levothyroxine (a thyroid hormone) to a Mediterranean diet and exercise program helps adults with obesity lose more weight and keep it off. The study enrolls 286 people aged 25-60 with grade I-II obesity and higher-than-normal …

This study is testing a new single-port robot to help perform weight loss surgery in 50 overweight or obese adults. The goal is to see if the robot makes the surgery safer and more effective, while also reducing surgeon fatigue. Participants must have a BMI of 27.5 or higher and …

This study looks at what happens to the body after bariatric surgery in people aged 12 to 24. It also tests whether adding semaglutide (a weekly injection) can help those who haven't lost enough weight 1 to 2 years after surgery. The goal is to understand why some respond better …

This study tests a drug called IBI362 in 180 Chinese adolescents aged 12 to 17 who are obese or overweight and haven't lost enough weight with diet and exercise alone. Participants will receive either the drug or a placebo to see if it helps reduce body mass index (BMI) safely. T…

This study is testing whether whole milk or nonfat milk is better for body composition and health in 200 children aged 9-12 who have a higher BMI. Families receive weekly milk deliveries and monthly check-ins. The goal is to see which milk type helps reduce fat mass and improve m…

This study aims to find the best combination of strategies to help people maintain weight loss after losing at least 5% of their body weight. Over 500 participants will first lose weight through a 16-week program, then be assigned to different packages of four methods: eating few…

This study looks at whether GLP-1 drugs, used for diabetes and weight loss, can improve kidney health in people with chronic kidney disease. Researchers will measure changes in fat around the kidneys and heart, as well as kidney function. The goal is to see if these drugs reduce …

This study is testing whether placing a temporary intragastric balloon (a soft balloon in the stomach) along with diet and exercise can improve asthma control in obese people whose asthma is not well managed by inhalers. About 84 participants will be randomly assigned to get the …

This study tests an experimental drug called HRS-7535 in 225 adults who have both heart failure (with mildly reduced or preserved pumping ability) and obesity. Participants will receive either the drug or a placebo for 36 weeks to see if it helps with weight loss and reduces infl…

This study tests a 24-week community-based lifestyle program called Inspire HER for Black women aged 30-79 with heart, kidney, or metabolic conditions. The program provides health education, physical activity, and social support to improve heart health. Researchers will also comp…

This study looks at whether time-restricted eating (eating only during a set window each day) can help adults who have recently lost weight keep it off and avoid regaining fat. About 110 adults aged 25-65 who lost at least 5% of their body weight in the last 3 months will be rand…

This study tests whether meal replacement products can help low-income adults with obesity, prediabetes, or type 2 diabetes lose weight and lower blood sugar. Twenty participants will use meal replacements and be monitored for weight loss and blood sugar changes. The goal is to s…

This study tests whether taking whey protein and collagen supplements along with doing resistance exercises can help people keep their muscle mass after bariatric surgery. About 35 adults who are having the surgery will be split into groups to compare different combinations of su…

This study compares two versions of Roux-en-Y gastric bypass surgery to see which one is better at putting type 2 diabetes into remission in severely obese patients. The trial will enroll 396 people with a BMI of 35 or higher and type 2 diabetes. Participants will be randomly ass…

This study tests a weekly injection called RM-718 in healthy people with obesity and in patients with obesity caused by problems in the MC4R pathway, including hypothalamic obesity and Prader-Willi syndrome. The main goal is to check the drug's safety and how the body processes i…

This study looks at whether a daily dose of milk polar lipids (a type of fat found in milk) can improve cholesterol levels, reduce inflammation, and support gut health in adults with high cholesterol and abdominal obesity. Researchers will measure changes in blood fats and other …

This study looks at whether a weight-loss procedure called Endoscopic Sleeve Gastroplasty (ESG), combined with healthy eating and exercise, can improve obstructive sleep apnea (OSA) in people with obesity. About 74 adults with moderate to severe OSA will be randomly assigned to r…

This early-stage study tests a new drug called TLC-6740 in healthy volunteers and people with obesity, with or without type 2 diabetes. The main goals are to check safety, how the body processes the drug, and to get an early look at whether it helps with weight loss or blood suga…

This study tests a new, personalized version of a weight-loss surgery called SADI-S. Surgeons will measure each patient's small intestine and adjust the bypass length to maximize weight loss while lowering the risk of vitamin deficiencies. The study includes 40 adults with obesit…

This study aims to help African American adults who don't get enough sleep and have overweight or obesity. Researchers will first talk with community members to understand their sleep habits and beliefs. Then, they will test a sleep improvement program to see if it helps people s…

This early-stage study tests GZR18, an injectable drug for obesity or overweight, in 60 Chinese adults. Researchers want to see how it affects stomach emptying and whether it changes how the body processes digoxin (heart medication), rosuvastatin (cholesterol drug), and warfarin …

This study compares two community-based programs designed to reduce heart disease risk factors—like high blood pressure and obesity—in Black women after pregnancy. About 432 Black or African American women who are early in pregnancy and have obesity or high blood pressure will ta…

This study looks at people who had a sleeve gastrectomy but didn't lose enough weight or regained it. It compares a newer, simpler surgery (SADI-S) to a more complex one (BPD-DS) to see which works better and has fewer side effects. About 151 adults will be randomly assigned to o…

This study looks at how popular weight-loss medications (GLP-1 and GIP/GLP-1 analogs) affect what people eat, their metabolism, and behavior over a year. Researchers will track 100 adults with overweight or obesity to see changes in weight, body composition, and diet quality. The…

This study is testing a minimally invasive weight loss procedure called endoscopic sleeve gastroplasty (ESG) in 12 people who have both obesity and ulcerative colitis and are planning or have had colon removal surgery. The procedure uses a suturing device to reduce stomach size b…

This study compares an intensive weight loss program—including meal replacements, behavioral support, and weight-loss medication—against standard care for adults with severe and complex obesity. The goal is to see if the intensive approach leads to better health outcomes and is c…

This study looks at three ways to lose weight—medication, surgery, or diet—to see which helps people with metabolic syndrome (a mix of diabetes, high blood pressure, and obesity) live longer and healthier. About 220 adults aged 35-65 will take part for 24 weeks. Researchers will …

This study tests whether combining lifestyle coaching with a smartphone app helps young adults (ages 18-40) who are overweight or obese lose weight. All 140 participants will receive diet and exercise goals and coaching. Researchers will measure weight change after 6 months to se…

This study tests whether vitamin D3 supplements can improve heart health in Chinese teenagers who are overweight or obese and have low vitamin D levels. 130 participants will receive either vitamin D3 or a placebo for 12 weeks. Researchers will measure changes in blood pressure, …

This early-stage study tests a new injectable drug called HRS-5817 in healthy adults, some with obesity and some without. The main goal is to check safety and how the body handles the drug, not weight loss. About 92 volunteers will receive either the drug or a placebo to gather i…

This phase 2 trial tests whether nicotinamide (a form of vitamin B3) can stop or reverse liver fibrosis in people with non-alcoholic fatty liver disease and obesity. Thirty adults will take either nicotinamide or a placebo daily for one year. Researchers will measure liver stiffn…

This study tests whether empagliflozin, a drug used for diabetes, can make arteries less stiff in veterans with obesity. Fifty participants will take either the drug or a placebo daily for 12 weeks. Researchers will measure changes in arterial stiffness using a standard test. The…

This study tests several affordable oral medications—including semaglutide, empagliflozin, metformin, and pioglitazone—to see if they can reverse prediabetes, promote weight loss, and lower heart disease risk in Hispanic adults. Researchers will monitor blood sugar, body fat, and…

This study tests whether a daily ketone ester drink can reduce liver fat and improve how the body handles sugar in adolescents and young adults with obesity and a fatty liver condition called MASLD. Forty participants will be randomly assigned to receive either the ketone drink o…

This study tests a 12-week program for African-American women who have had breast cancer and now have high blood pressure or obesity. The program provides grocery delivery, cooking classes, and nutrition education to help them eat healthier and control their blood pressure. The g…

This Phase 2 trial compares a new drug, BGM0504, to the existing weight-loss drug tirzepatide in 90 adults with obesity (BMI 35-45) who do not have diabetes. Participants will receive one of the two drugs for 26 weeks to see which leads to greater weight loss and improvements in …

This study tests whether a cardiometabolic clinic can help obese adults with heart disease lose weight and improve health. Sixty participants will receive care from the clinic and be followed for 12 months. Researchers will measure weight loss, body mass index, and fat distributi…

This study tests whether a type of talk therapy called Acceptance and Commitment Therapy (ACT) can help people who have had bariatric surgery stay physically active and avoid regaining weight. Researchers will compare ACT to standard education about exercise in 164 adults who had…

This study tests whether using a mobile health app helps people with type 2 diabetes and obesity lose weight and control blood sugar better than standard programs. Thirty adults will track their weight daily and blood sugar before and after meals for six months. The goal is to se…

This study tests whether mobile health apps like Weight Watchers and Healthi can help low-income Hispanic adults with type 2 diabetes lose weight and improve blood sugar control. Forty-five participants will use one of the apps or a standard program for six months, tracking their…

This study tests a 24-week program called Black Impact for Black men with below-ideal heart health. Participants will take part in weekly physical activity, health education, and work with a coach and trainer. The goal is to see if the program improves heart health and reduces st…

This study compares the experimental drug CagriSema (cagrilintide and semaglutide) to a calorie-reduced diet in 80 adults with obesity. It measures how each approach changes the body's energy use, like sleeping metabolic rate. The study lasts about 1.5 years, and all participants…

This study tests whether the Mayo Clinic Diet helps people with obesity lose at least 5% of their body weight compared to standard advice. Two hundred fifty adults aged 18–64 with a BMI of 25 or higher will follow the diet using a book, an app, or both for 12 weeks. Researchers w…

This pilot study at Johns Hopkins University will enroll 40 Black women who recently had gestational diabetes and are overweight. Half will receive prepared low-carb, low-fat meals plus nutrition counseling, lactation support, and culturally tailored food bundles; the other half …

This study tests whether adding a structured self-management program (DECIDE) to standard community health worker support helps 500 Philadelphia residents aged 35-75 better manage heart disease risks and meet their social needs. Participants will either receive the enhanced progr…

This Phase 2 trial is testing an investigational drug called HDM1005 for weight loss in 240 adults with obesity who do not have diabetes. Participants receive weekly injections of either the drug or a placebo for 22 weeks. The main goal is to see how much body weight they lose an…

This study tests whether adding a stitch (omentopexy) during sleeve gastrectomy reduces new cases of acid reflux. 526 adults with obesity will be randomly assigned to get the standard sleeve or the sleeve plus stitch. Researchers will check reflux symptoms and medication use two …

This study looks at whether adding exercise to a common weight-loss drug (semaglutide) can prevent muscle loss and keep people physically strong. Researchers will follow 40 adults with obesity for two years, tracking muscle mass, strength, and function. They will also see what ha…

This early-phase trial is testing whether a naturally occurring peptide, angiotensin-(1-7), can improve blood vessel function and nerve activity in people with obesity and high blood pressure. Researchers will compare the effects of the drug against a placebo (saline) in 52 adult…

This study tests whether specialized bariatric supplements (Elan Believe, Compass, Supreme) prevent vitamin and mineral deficiencies after weight-loss surgery better than standard over-the-counter multivitamins. Over 600 adults undergoing sleeve gastrectomy, gastric bypass, or on…

This study tests whether a daily multivitamin tablet can prevent vitamin and mineral deficiencies in people using GLP-1 drugs (like Ozempic or Saxenda) for weight loss. These drugs suppress appetite, which can lead to low nutrient intake. The trial will compare a multivitamin to …

This study follows 234 people who regained weight after a sleeve gastrectomy and are now getting a revision surgery. The goal is to compare three procedures—SADI-S, RYGB, and OAGB—to see which leads to the most weight loss, fewest complications, and best nutritional outcomes. Par…

This study tests whether eating special protein and fiber bars three times a day, as part of a low-calorie diet, helps overweight or obese adults lose weight and improve heart and joint health. About 144 participants will be split into four groups, each receiving a different bar …

This study tests whether motivational interviewing—a counseling style that helps people find their own motivation to change—can reduce obesity in children aged 2 to 8. About 6,600 children with a BMI at or above the 85th percentile will take part across 49 clinics. Half the clini…

This study is testing whether a dietary supplement called attapulgite can help people with obesity or overweight with type 2 diabetes lose weight safely. Forty participants will take either attapulgite or a placebo daily for 12 weeks. Researchers will measure changes in BMI, weig…

This study tests whether taking daily protein supplements and doing resistance exercises (like lifting weights) can prevent too much muscle loss after bariatric surgery. About 400 patients will be randomly assigned to either standard care or standard care plus the protein and exe…

This study tests whether enavogliflozin, a diabetes drug, can improve heart function and exercise capacity in 30 obese adults with type 2 diabetes. Participants receive either the drug or a placebo for 12 weeks, and doctors measure changes in heart blood flow and fitness. The goa…

This study tests whether artificial intelligence can better predict difficult airway management in 340 obese patients undergoing bariatric surgery. Researchers will compare AI predictions using standard measurements like mouth opening and neck length against actual views during i…

LiverSeek is a study testing an automated screening program for advanced liver fibrosis in people aged 50-75 with risk factors like diabetes or obesity. When a routine blood test is done, the lab system automatically calculates a fibrosis score and, if needed, orders additional t…

This study tests whether a special ultrasound done during an endoscopy can accurately detect liver scarring in people with obesity and suspected non-alcoholic fatty liver disease. Researchers will compare this new method to standard tests and liver biopsy in 150 adults. The proce…

This study is testing a mobile health platform designed to help children ages 8-12 who don't get enough sleep (less than 8.5 hours per night) sleep longer. The goal is to see if improving sleep can help prevent obesity. The study will enroll 5,000 children and track their sleep d…

This study looks at whether whole or low-fat (1%) milk is better for preventing obesity in toddlers. Researchers will give 625 children either whole or low-fat milk for one year and measure changes in waist size and body mass index. The goal is to find out which milk type support…

This study tests whether community health workers can help adults with chronic illnesses get up-to-date on COVID-19 and flu vaccines. Participants receive up to three counseling sessions in English or Spanish to address their vaccine concerns. The goal is to reduce health dispari…

This study tests whether regularly warming the legs with a portable sauna blanket can improve blood vessel health and lower the risk of high blood pressure disorders in pregnant women with obesity. About 118 women will use the blanket at home for 16 weeks, starting early in pregn…

This study tests a family-centered program to help Hispanic families lose weight and prevent obesity. About 1,319 parents and their children ages 8-12 will take part. The program uses text messages and family support to encourage healthy eating and activity.

This study tests a program called Healthy Family Foundations for military families expecting their first child. The program includes 10 online group classes (5 before birth, 5 after) to help parents support each other with healthy eating, activity, and parenting. Researchers will…

This study tests a web and mobile program called Healthy Together ("Juntos") for Hispanic teens aged 12-15 and their parents. The goal is to prevent unhealthy weight gain and improve physical activity and diet. About 750 families will use the program to see if it helps teens stay…

This study looks at whether losing weight can help prevent or delay Alzheimer's disease in adults with Down syndrome. About 81 participants without dementia will either follow a reduced-calorie diet with monthly coaching or attend general health education sessions. Over 12 months…

This study tests a mobile health app designed to help Hispanic adolescents (ages 12-18) who are overweight improve their diet, physical activity, and sleep. The goal is to see if the app can help prevent type 2 diabetes. The study will enroll 30 participants and last 30 days, foc…

This study looks at whether taking a daily iron supplement after sleeve gastrectomy surgery can prevent iron deficiency anemia. Researchers will compare two groups of adults who had the surgery: one group takes extra iron plus a multivitamin, the other takes only a multivitamin. …

This study is testing whether following a Mediterranean diet during pregnancy can reduce the chance of children developing allergies by age 2. Researchers are enrolling 276 healthy pregnant women (ages 20-35) who are at risk of having a baby with allergies. Participants receive p…

This study tests whether wearing a smartwatch that tracks activity and body composition, along with exercise reminders, can help people on GLP-1 drugs (like Ozempic or Wegovy) maintain muscle and strength. About 100 adults who recently started or plan to start these medications w…

This study looks at whether adjusting meal timing can reduce health risks for night-shift nurses and nursing assistants who are overweight. Participants will either just track their diet, follow a 10-hour daytime eating window, or add a low-sugar snack during night shifts. The go…

This study tests whether giving an intravenous iron infusion three days before bariatric surgery can prevent anemia and improve quality of life in obese patients with iron deficiency. Researchers will enroll 200 participants and compare those who receive iron to those who get a p…

This study tests whether 4 weeks of high-intensity interval training (HIIT) or time-restricted eating (TRE) can improve health markers linked to type 2 diabetes in adolescents and young adults with overweight or obesity. Forty participants will be randomly assigned to one of the …

This study tests whether dialectical behavioral therapy (DBT), a type of talk therapy that teaches mindfulness and emotional skills, can help teens with obesity improve their quality of life and manage weight. About 90 teens aged 14-17 who show signs of depression and are at risk…

This study tests whether a personalized ventilation method using electrical impedance tomography (EIT) can prevent lung complications after laparoscopic gastric sleeve surgery. About 118 adults with obesity will be randomly assigned to receive either EIT-guided ventilation or sta…

This study tests a 6-month virtual nutrition education program (PEDALL) to prevent overweight and obesity in children and teens with acute lymphoblastic leukemia (ALL) during maintenance chemotherapy. The program is offered in English and Spanish to 376 participants aged 5-21. Re…

This study looks at whether the timing of a 9-hour eating window (early, mid, or late in the day) affects blood sugar control in people with obesity who have or are at risk for type 2 diabetes. Over 7 days, 120 participants will follow one of three time-restricted eating schedule…

This study tests whether online group education and lifestyle coaching can improve quality of life and health markers in women with PCOS and obesity. Forty non-pregnant women aged 18-49 will be assigned to either the virtual program or usual care. Researchers will measure changes…

This study tests whether cagrilintide, a new injectable drug, causes fewer stomach side effects than a placebo in people with obesity who previously quit GLP-1 medications due to nausea, vomiting, or diarrhea. About 114 participants will receive either cagrilintide or a dummy sho…

This study is testing a new, ultra-thin endoscope that goes through the nose without sedation, instead of the usual mouth-and-sedation approach. Researchers want to see if it improves patient experience and lowers costs for people in bariatric care. About 100 adults will try the …

This study tests whether 10 minutes of daily brain games on a phone can help teens aged 14-17 with overweight improve their self-control around food. Over three weeks, participants play games designed to strengthen inhibitory control and receive a short nutrition lesson. The goal…

This trial compares a new 'low impact' laparoscopic technique using lower gas pressure and smaller incisions to standard laparoscopy for sleeve gastrectomy in 128 obese patients. The goal is to see if it reduces post-surgery pain and improves lung function. Participants are rando…

This study tests whether giving lidocaine through a stomach tube can reduce nausea and vomiting after weight-loss surgery. About 100 obese adults having laparoscopic sleeve gastrectomy will receive either lidocaine or a saltwater placebo right after surgery. Researchers will trac…

This study looks at whether adding pork protein to the diet can help middle-aged women with overweight or obesity who are taking GLP-1 medications (like Ozempic or Wegovy) maintain muscle and improve well-being. Over 12 weeks, 75 women will continue their medication and eat prote…

This pilot study tests whether tirzepatide, a medication used for diabetes and weight loss, can reduce the frequency and severity of hot flashes in postmenopausal women with obesity. Researchers will also measure markers of biological aging, like cellular senescence and epigeneti…

This early-stage study tests whether a new drug called NNC0113-5840 is safe for people with overweight or obesity. About 48 adults aged 18-55 with a BMI between 25 and 35 will receive either the drug or a placebo. The main goal is to check for side effects and how the drug moves …

This Phase 3 trial tests whether a once-weekly injection called NNC0487-0111 can help people with overweight or obesity and knee osteoarthritis lose weight and feel less pain. About 400 adults will receive either the drug or a placebo for several weeks. Researchers will measure c…

This Phase 3 study tests a once-weekly injection called NNC0487-0111 in 400 adults who are overweight or obese and have knee osteoarthritis. The goal is to see if it helps with weight loss and reduces knee pain compared to a placebo. Participants receive either the active drug or…

This early-stage study tests a new drug called ALV-100 in 180 adults who are overweight or obese, with or without type 2 diabetes. The main goal is to check the drug's safety and how the body processes it. Participants receive either the drug or a placebo, and researchers will mo…

This study tests if a mild electrical patch placed on the skin (called TENS) can prevent breathing problems after weight-loss surgery in people with severe obesity. About 70 participants will be randomly assigned to receive either TENS or a fake device. The main goal is to see if…

This study tests a once-weekly injection called retatrutide to see if it can reduce chronic low back pain and help with weight loss in people who have obesity or overweight. About 586 participants will receive either the drug or a placebo for up to 80 weeks. The goal is to find a…

This study tests whether starting gentle, supervised movement soon after bariatric surgery and continuing it at home can help manage pain and improve recovery. Researchers will track pain levels, physical function, and quality of life in 112 participants. The goal is to find a si…

This study tests whether a 4-week emotion regulation and self-monitoring program can help overweight and obese teens ages 11-14. Participants attend weekly telehealth groups and track their mood and health behaviors. Researchers will measure changes in brain activity, blood marke…

This early-stage study tests a new injection called SHR-2906 to see if it is safe and tolerable. It involves 124 healthy volunteers and obese patients. The goal is to check for side effects and how the drug moves through the body.

This study tests a medicine called cagrilintide to see how it affects appetite and how much people eat. About 120 adults with overweight or obesity will receive either the drug or a placebo for around 30 weeks. The goal is to measure changes in total energy intake from meals and …

This study is testing a weight loss program that uses a smartphone app and a coach to help teens and young adults who are overweight after a stem cell transplant. The goal is to see if the program can help them lose weight and build healthy eating habits. About 20 people who are …

This study looks at whether blowing balloons can improve lung function and reduce shortness of breath in obese children aged 6 to 12. Thirty-eight children will be split into two groups: one will blow balloons, the other will do a simple running exercise. Researchers will measure…

This study tests whether personalized nutrition and exercise plans can reduce frailty and improve body composition in prostate cancer survivors who are on hormone therapy (ADT). Fifty participants will receive diet advice, exercise coaching, and educational sessions. Researchers …

This early-stage study tests whether a once-weekly injection called NNC0487-0111 can lower how much people with obesity eat and reduce their appetite. About 120 adults will receive either the drug or a placebo for several months. The goal is to see if the treatment changes energy…

This study tests whether a negative pressure wound therapy (NPWT) device, which uses a vacuum to help wounds heal, works better than standard bandages for the abdominal incision in obese patients having breast reconstruction surgery. About 80 participants will be randomly assigne…

This pilot study tests whether semaglutide (Ozempic), a drug used for diabetes and obesity, is safe and tolerable for weight loss in people with advanced lung disease. Eight participants with conditions like COPD or pulmonary fibrosis will take weekly injections for 12 weeks. Res…

This Phase 3 study tests whether tradipitant can reduce nausea and vomiting caused by GLP-1 weight-loss drugs. About 280 healthy overweight or obese adults will receive either tradipitant or a placebo. The goal is to see if tradipitant helps people tolerate these medications bett…

This early-stage study tests a new drug called RT-114 in 60 healthy volunteers to see if it is safe and how the body processes it. Some participants will get the drug as a shot or pill, while others will get a placebo. The goal is to gather initial safety data before testing in p…

This study tests whether a gentle brain stimulation technique called tDCS, combined with cognitive training, can help veterans with obesity reduce impulsive behavior and lose weight. About 124 veterans will be randomly assigned to receive either real or fake stimulation during tr…

This study tests whether foot reflexology can reduce nausea and vomiting in the first 24 hours after sleeve gastrectomy (a type of weight-loss surgery). About 60 adults having this surgery will be randomly assigned to receive either foot reflexology or standard care. The goal is …

This study compares three volumes of a nerve block (M-TAPA) to see which provides the best pain relief after laparoscopic sleeve gastrectomy. Sixty adults undergoing this weight-loss surgery will receive one of three volumes of bupivacaine. The goal is to find the optimal volume …

This study tests whether adding low-level laser acupuncture to standard diet and exercise helps obese menopausal women lose more weight and improve body shape. Forty women aged 45-55 with a high BMI or waist-to-hip ratio will receive either lifestyle changes alone or lifestyle ch…

This early-stage study tests a new nasal spray form of semaglutide (a weight-loss drug) in 60 overweight or obese adults. The main goal is to check safety and how the body processes the drug, not to prove weight loss yet. Participants receive a single dose and are monitored close…

This early-stage study tests a new medicine, NNC6989-0001, for safety and tolerability in 96 healthy adults who are overweight or have obesity. Participants receive either the drug or a placebo by chance. The goal is to check for side effects and how the drug moves through the bo…

This study tests if treating insomnia first helps breast cancer survivors lose more weight. 250 women with early-stage breast cancer who are overweight and have insomnia will either get a sleep therapy (CBT-I) or sleep education before starting a weight loss program. Researchers …

This study tests whether easy home-based strategies—like wearing blue-light blocking glasses, standing for 10 minutes each hour, and not eating after 8pm—can reduce the negative health effects of evening screen time. Researchers will track 30 adults with obesity or prediabetes wh…

This study is testing whether a daily omega-3 supplement called SPM Active® can increase certain fatty acids in the blood and improve feelings of burnout, life satisfaction, and sleep quality. Researchers will enroll 33 adults aged 45-60 with obesity (BMI 30-40). Participants wil…

This study tests whether applying kinesiology tape to the chest and back can improve lung function, breathing muscle strength, and sleep quality in people who are overweight or obese. Researchers will measure breathing tests and sleep scores in 36 adults over four weeks. The tape…

This study tests different telehealth weight loss programs for adults aged 65-85 who have obesity and at least two chronic health conditions. Participants will receive a personalized diet and exercise plan designed to be safe for their specific health needs. The goal is to find t…

This study tests a group counseling program called Healing HEARTS to help people with conditions like obesity, skin disease, cancer, HIV, diabetes, or chronic pain deal with internalized stigma. Participants will either join the counseling program or a peer support group. The goa…

This study compares two types of nerve blocks for shoulder surgery in adults with obesity. The standard block can sometimes weaken breathing muscles, while the experimental 'phrenic-sparing' block aims to avoid that. Researchers will measure breathing problems and pain control in…

This study compares two types of ultrasound-guided nerve blocks to control pain after laparoscopic sleeve gastrectomy (weight-loss surgery). About 70 adults aged 18-65 with a BMI between 30-50 will receive either an external oblique intercostal plane block or a subcostal transver…

This study looks at whether lifestyle changes can improve dry eyes in obese women with polycystic ovary syndrome (PCOS). Researchers will measure tear production and eye comfort in 40 women before and after the program. The goal is to see if weight loss and healthy habits can eas…

This study tests whether taking semaglutide (a weight-loss medication) for 12 weeks before starting IVF can lead to better-quality embryos in overweight or obese women. About 62 women aged 38 or younger with a BMI between 27 and 40 will be randomly assigned to receive semaglutide…

This study tests two drugs—lidocaine and dexmedetomidine—given as infusions during laparoscopic sleeve gastrectomy to see which one helps with pain and recovery. Forty adults aged 20-50 with a BMI of 35-50 are being recruited. The goal is to find a better way to manage early post…

This study tests whether replacing opioids with a non-opioid drug (dexmedetomidine) and adding person-centred care can improve recovery and reduce opioid use in 220 adults undergoing obesity surgery. Participants are randomly assigned to either the opioid-free approach or standar…

This study tests a new home-based program that uses a special treadmill and virtual reality to help children with conditions like cerebral palsy, muscle diseases, or obesity improve their walking. About 30 children aged 6 to 17 will try the program at home for at least 3 sessions…

This study tests whether adding social well-being workshops to standard obesity care can reduce the negative effects of weight stigma. About 210 adults with obesity will either join these workshops plus exercise classes for 12 months, or receive usual care. Researchers will measu…

This study tests whether an ultrasound-guided nerve block called M-TAPA can reduce pain and the need for opioid painkillers after laparoscopic sleeve gastrectomy. Sixty adults scheduled for this weight-loss surgery will receive the block while under anesthesia. Researchers will m…

This study looks at whether taking beta-glucan (a type of fiber) can help healthy women with overweight lose more body weight and fat while on a low-calorie, low-carb diet. It also checks if it reduces hunger and changes appetite-related hormones. Sixty women will be randomly ass…

This study tests a new method to reduce pain and nausea after laparoscopic sleeve gastrectomy, a common weight-loss surgery. About 200 adults will receive either a paragastric nerve block (injecting numbing medicine near the stomach) or a placebo during surgery. The goal is to se…

This study looks at whether a special diet workshop held 15 days after bariatric surgery can help patients increase their protein intake. About 88 adults who are scheduled for weight-loss surgery will take part. The goal is to improve protein levels and overall recovery over the …

This study looks at whether taking N-acetylcysteine (NAC), an antioxidant supplement, can improve the health and fitness benefits of high-intensity interval training in adults with overweight or obesity. Researchers will measure changes in body composition, fitness, and blood mar…

This study compares two types of weight-loss surgery—robotic sleeve gastrectomy and laparoscopic sleeve gastrectomy—to see which causes less pain right after the operation. About 91 people having sleeve gastrectomy at Cleveland Clinic will be randomly assigned to one method. Rese…

This study tests whether giving a combination of two drugs (lidocaine and dexmedetomidine) during weight-loss surgery can reduce pain, inflammation, and cell stress afterward. About 104 adults having laparoscopic bariatric surgery will receive either the combo, one drug alone, or…

This study tests two common techniques—oversewing with stitches versus using surgical clips—to reinforce the staple line in gastric bypass surgery and reduce post-operative bleeding. Thirty adults undergoing laparoscopic one-anastomosis gastric bypass will be randomly assigned to…

This study tests an injection called HRS9531 in 140 adults with obstructive sleep apnea and obesity who do not use a CPAP machine. The goal is to see if it improves breathing during sleep and reduces weight over 52 weeks. Participants are randomly assigned to receive the drug or …

This study looks at whether minocycline, an antibiotic that reduces inflammation, can help people who have both obesity and depression that hasn't improved with other treatments. Researchers will test if this approach is practical and acceptable for 35 participants. The goal is t…

This study tests whether taking vitamin C daily can improve gut health and reduce inflammation in adults with obesity. Over two 2-week periods, 34 participants will take either vitamin C or a placebo, and researchers will measure gut permeability using sugar drinks and blood, uri…

This study is testing how full people feel after two types of weight-loss procedures: sleeve gastrectomy (removing part of the stomach) and a stitch procedure (OverStitch™) for those who regained weight after earlier surgery. Sixty adults will drink water until comfortably full t…

This study tests whether a 4-week program addressing weight stigma and self-blame can help teens (ages 13-17) better manage their weight. Participants are randomly assigned to either the stigma-focused program or a general health education session, followed by a 16-week weight ma…

This study looks at whether a 4-week low-calorie, high-protein diet before bariatric surgery is safe and well-tolerated. Researchers want to see if it reduces liver fat and helps surgeons operate more easily. About 200 people with severe obesity will be split into two groups: one…

This study compares two pre-surgery diets for people scheduled for bariatric surgery: ready-to-eat meals versus standard liquid meal replacements. The goal is to see which diet is easier to stick to, measured by blood ketone levels and meal logging. About 140 adults will particip…

This trial tests whether a personalized exercise and breathing program before and after bariatric surgery helps obese patients recover better. 132 participants will either follow the program or receive standard care. Researchers will measure weight loss, waist size, and complicat…

This natural history study will look at how metabolism relates to body size and composition in 2,000 people aged 2 and older, including healthy volunteers and those with conditions like diabetes, obesity, or cancer. Participants will stay in the hospital for two days to undergo v…

This study follows 1,500 children ages 8 to 17 over several years to learn how genes, sleep, mood, and environment affect eating behavior and overall health. Participants wear wrist monitors, answer smartphone surveys, and provide samples like blood and stool. The goal is to iden…

This study aims to learn more about heart and blood vessel diseases by observing people who have them or are at risk. Researchers will collect samples and perform tests like imaging and stress tests on up to 5,000 participants, including healthy volunteers and relatives of affect…

This study follows 1,500 pregnant women and their children for up to 18 years to understand how a mother's health, lifestyle, and environment affect her child's growth and risk for obesity, diabetes, and fatty liver. Mothers attend visits during pregnancy and after birth, while c…

This early-stage study looks at how a new weight-loss drug, maridebart cafraglutide, changes the way the body processes oral contraceptives. It involves 45 postmenopausal women aged 45 to 65 who are overweight or obese. The goal is to see if the drug affects birth control hormone…

This study looks at whether childhood trauma is linked to changes in stress hormones and inflammation in obese women. Researchers will measure cortisol levels in saliva and urine, along with other markers, in 102 women. The goal is to better understand how past experiences might …

This study follows 200 obese Chinese patients undergoing weight-loss surgery to understand how nonalcoholic fatty liver disease (NAFLD) progresses. Researchers will take liver biopsies during surgery and track health markers over time. The goal is to find better ways to predict a…

This study looks at people who had an endoscopic sleeve gastroplasty (ESG) at least 5 years ago to see if they kept the weight off. Researchers will measure total body weight loss at the 5-year mark. The goal is to understand the long-term success of this weight-loss procedure.

This observational study follows 150 people with MEHMO syndrome or related conditions to better understand how the disease progresses. Researchers will collect medical history, imaging, and lab samples to find biological markers that could help monitor the disease. No treatment i…

This study is tracking 2,000 adults over time to understand how obesity and disruptions to the body's internal clock (circadian rhythm) influence aging and heart health. Participants will provide health data, questionnaires, and biological samples during annual check-ups. The goa…

This study looks at whether raising the head and torso 25 degrees helps people with severe obesity (BMI over 40) breathe better through a facemask while under general anesthesia. Fifty adults scheduled for elective surgery will be placed in both a flat and a head-elevated positio…

This pilot study aims to see if a new program can help people manage their weight after they stop taking anti-obesity medications. Researchers will test if the program is easy to run and acceptable to patients. About 214 participants will either receive the new program or usual c…

This study looks at tiny particles called extracellular vesicles (EVs) released from fat cells. Researchers want to understand how these particles carry signals that may affect heart and liver health in people with obesity. About 100 adults having weight-loss surgery will provide…

This study looks at how obesity and body fat affect heart disease risk in 2,000 healthy African American men and women. Researchers will measure body fat, blood fats, and insulin function to see if risk factors differ by sex. The goal is to understand why heart disease rates are …

This study will enroll 20 adults with severe obesity who are scheduled for weight-loss surgery. Researchers want to see if advanced tools like MRI and 3D body scans give a clearer picture of health changes than just measuring weight or waist size. Participants will be followed fo…

This study looks at how a person's genetics, gut microbiome, and behaviors influence how well they tolerate and respond to the weight-loss drug tirzepatide. Researchers will follow 200 overweight or obese adults for up to 12 months, tracking weight changes, side effects, and whet…

This study looks at how long you need to fast and whether temporarily stopping GLP-1 medications (like liraglutide or semaglutide) affects how much food stays in your stomach. It involves 75 people with obesity who are already taking these drugs. The goal is to understand stomach…

This study aims to describe the physical and behavioral traits of overweight and obese adults compared to lean individuals. Researchers will measure hormones, metabolism, food preferences, fitness, sleep, and thinking patterns in 2,000 participants. The goal is to better understa…

This study tracks 800 obese patients at Nîmes University Hospital to see if they develop alcohol or other addictions during obesity treatment, especially after bariatric surgery. Researchers will use questionnaires and blood tests to understand these behaviors. The goal is to imp…

This study looks at whether a special care pathway for obesity helps patients feel more capable of managing their condition. About 133 adults with obesity will fill out questionnaires on self-efficacy, quality of life, and mood, and some will join focus groups. The goal is to see…

This study looks at why people with obesity often regain weight after losing it through a behavioral weight loss program. About 205 adults aged 25-59 will first lose at least 7% of their body weight, then be followed for a year to track how much weight they regain. The goal is to…

This study looks at two ways of giving a standard liquid meal to measure how the body handles sugar. One method gives everyone the same number of calories, while the other adjusts the calories based on a person's size. Researchers want to find out which method gives more consiste…

This study tests a smartphone app designed to help adults taking GLP-1 medications for obesity or type 2 diabetes eat better. About 50 participants will use the app for 6 weeks to track their diet and learn about nutrition. The goal is to see if the app is helpful and easy to use…

This study looks at how changing the amount and type of food you eat affects the energy your body uses to digest and process that food. Healthy adults aged 18 to 60 will stay in a clinic for about 35 days, eating only provided meals and spending multiple 24-hour periods in a seal…

This study looks at whether overweight girls start puberty earlier than girls of normal weight. Researchers will use breast ultrasound and other tests to tell the difference between breast tissue and fatty tissue. The study involves 150 healthy girls ages 8-14 who have some breas…

This study compares two common anesthesia methods—intravenous drugs and inhaled gases—to see how they affect thinking skills after sleeve gastrectomy (weight-loss surgery). Researchers will measure how quickly patients wake up and follow commands, and test their memory and attent…

This study looks at how the body absorbs esomeprazole (a stomach acid reducer) when taken as a tablet or dissolved in water, in people who had gastric bypass surgery a year ago. Fifty participants will have a small device placed in their stomach pouch to measure acid levels, and …

This study follows 30 people aged 16–80 with obesity who are starting weight-loss medication. Researchers will track changes in hunger, fullness, cravings, and portion size using questionnaires and interviews at 0, 3, 12, and 18 months. The goal is to understand how eating behavi…

This study is testing new magnetic resonance imaging (MRI) techniques to get clearer pictures of the heart and blood vessels without using radiation. Researchers will compare these new MRI methods to standard tests like angiography and CT scans. Up to 4,000 adults—including healt…

This study works with Black churches in Washington, D.C. to understand heart health risks like obesity, high blood pressure, and diabetes. About 200 adults will get a health exam, wear an activity monitor for a month, and answer health questions. The results will help design a fu…

This study investigates how exercise affects the structure and function of fat tissue in adults aged 18-40 with obesity or metabolic syndrome. Participants are randomly assigned to either an exercise program or a sedentary control group. All undergo a 10% weight loss phase, then …

This study tests whether starting with a low-carb diet and then switching to low-fat leads to more body fat loss than the opposite order. Over 8 weeks, 42 overweight adults will eat only provided meals and track their weight, activity, and glucose. Researchers want to see if diet…

This study is looking at whether GLP-1 receptor agonists—drugs used for type 2 diabetes and obesity—can also improve dry eye disease. Researchers will measure changes in tear stability and eye surface health in 100 patients who have not taken these drugs before. The goal is to un…

This study looks at how certain immune cells, called meta-inflammatory monocytes, along with body composition and diet, may contribute to insulin resistance in adolescents. Researchers will collect blood samples and health information from 175 teens aged 14-18, including those wi…

This study looks at how obesity impacts the physical abilities and daily activities of people over 65. Researchers will compare obese and normal-weight seniors using fitness tests and questionnaires. The goal is to understand how excess fat, combined with age-related muscle loss,…

This study is looking at what happens to muscle and bone when people lose weight using the drug tirzepatide. Researchers want to see if adding protein shakes and resistance exercise can protect muscle and bone. The study will enroll 50 adults with obesity and track changes over 6…

This study aims to understand how the body defends its weight by measuring energy use and intake after a short fast. Twelve men and women who are either underweight or have obesity will fast for two days, then eat freely for two days in a special chamber. The results will help de…

This study aims to understand how the hormone insulin controls blood sugar in different people. Researchers will test a new procedure called the graded insulin suppression test (GIST) in 15 healthy volunteers and those at higher risk for type 2 diabetes. Participants receive medi…

This study tests whether a cone-shaped blood pressure cuff placed on the forearm gives more accurate readings than the standard cuff on the upper arm in pregnant women. High blood pressure during pregnancy can lead to serious decisions like early delivery or C-section, so better …

This early-stage study looks at how the experimental drug BI 456906 attaches to receptors in the liver and pancreas that control appetite and weight. About 30 adults with obesity will receive either BI 456906 or the approved weight-loss drug semaglutide for 17 weeks. Researchers …

This study looks at why some people lose muscle and strength after weight loss surgery, and why others regain weight. Researchers will track eating habits, grip strength, and body changes in 110 bariatric patients for a year. They will also study genes and metabolism to find fact…

This study looks at why fat tissue in the belly area doesn't respond normally in people with obesity. Researchers will measure how fat cells release fatty acids in different body areas. The goal is to understand the basic biology of fat tissue, not to test a treatment. 24 adults …

This study looks at how a supplement called nicotinamide riboside (NR) and a low-carb, high-fat 'ketogenic' diet affect the way the body burns fat and uses energy. Researchers will measure changes in metabolism in 100 overweight or obese adults. Participants will eat a standard d…

This study looks at 100 adults with severe obesity to see if the type of weight-loss surgery—sleeve gastrectomy or gastric bypass—changes binge eating, depression, and anxiety differently. Participants fill out questionnaires before surgery and for 12 months after. The goal is to…

This study looks at why some children are less affected by food advertising than others. Researchers will use brain scans and eating tests in 200 kids aged 7-9 to find traits that protect against overeating. The goal is to understand what makes certain children resilient to food-…

This study looks at two different training programs for doctors and health workers at community health centers. The goal is to see which training helps patients lose weight better and get more people to use weight management services. About 6,200 adults and youth on Medicaid will…

This study looks at what happens when people sleep only a few hours on weekdays but catch up on weekends. Researchers want to see if this pattern harms blood sugar, blood pressure, and body fat compared to getting enough sleep every night. The study involves 72 adults aged 18 to …

This study tracks 420 people to see how bariatric surgery affects drinking behavior using a special device called a drinkometer. It measures things like sip size and speed, and looks at how gut hormones and sex differences play a role. The goal is to better understand why surgery…

This study is testing whether a substance in the blood called 1,5-anhydroglucitol can serve as a marker for how well the pancreas is working in obese children, with or without type 2 diabetes. Researchers will measure levels of this marker in 50 children aged 12 to 16 and compare…

This study looks at how losing weight changes the fat stored inside your muscles, called intermuscular adipose tissue (IMAT). Researchers want to see if weight loss reduces inflammation and improves how your muscles respond to insulin. Seventy adults with obesity will follow a 12…

This study aims to see if a short, interval fitness test (the IFT 30-15) can reliably measure heart and lung fitness in both healthy people and those with high blood pressure or obesity. Researchers will compare results from this test with a standard treadmill test and a six-minu…

This study is recruiting 8,000 young Chinese adults with obesity (BMI 30 or higher) to investigate how genes and clinical features contribute to obesity and metabolic syndrome. Researchers aim to better understand the underlying causes, which could eventually lead to improved tre…

This study looks at how growth hormone affects beta-cells, which make insulin, in people with a family history of type 2 diabetes. Researchers will compare 30 obese adults with and without a family history of diabetes. The goal is to better understand why some people develop diab…

This study looks at how time restricted eating (eating only during a 6-hour window each day) affects metabolism and immune function in healthy women aged 18-50 with different body sizes. Participants will stay in the clinic for 5 days, follow the eating schedule for 3 days, and u…

This study aims to learn how type 2 diabetes and obesity in young people affect heart and blood vessel health over time. About 930 participants aged 12 to 25, including those with diabetes, overweight but not diabetic, and healthy lean individuals, will be followed for up to 25 y…

This study looks at how growth hormone affects beta-cells, which make insulin to control blood sugar, in women who had gestational diabetes. Researchers will compare women with and without a history of gestational diabetes to better understand risk factors. The goal is to learn m…

This study looks at 240 adults aged 40-60 to see if being overweight or obese in midlife is linked to early signs of Alzheimer's in the brain. Participants will have metabolic tests and brain scans (MRI and PET) to measure inflammation, brain shrinkage, and protein buildup. The g…

This study is not testing a new drug or treatment. Instead, researchers want to make sure their lab tests and equipment give accurate and repeatable results when studying conditions like obesity, diabetes, heart disease, and bone loss. Up to 100 healthy volunteers and people with…

This study uses advanced heart MRI to see how bariatric surgery and cardiac rehabilitation change the heart's structure and function. Researchers will scan 150 adults before and 6-12 months after these metabolic treatments. The goal is to understand how the heart adapts to these …

This observational study looks at the bacteria in dental plaque of 170 people with obesity (BMI 30+) who are scheduled for bariatric surgery. Researchers want to see if the types and amounts of mouth bacteria differ between those with obesity (BMI 30-35) and those with morbid obe…

This study looks at how being overweight affects insulin sensitivity and heart-lung fitness in people with type 1 diabetes. Researchers will compare participants with and without diabetes, before and after a 15-week high-intensity interval training program. The goal is to underst…

This study looks at whether breathing a low-density helium-oxygen gas mixture can reduce breathlessness and improve exercise capacity in people with heart failure with preserved ejection fraction (HFpEF) and obesity. Researchers will measure how much oxygen the body uses during b…

This study collects blood and tissue samples from 270 severely obese patients during bariatric surgery to uncover new biological factors that lead to type 2 diabetes. Participants are grouped by their metabolic status: those with diabetes, insulin resistance, or normal insulin se…

This trial tests two types of opioid-free anesthesia in 70 people having weight-loss surgery. One method uses a gas called desflurane, the other uses intravenous drugs. Researchers will measure stress hormones in the blood to see which approach causes less stress on the body. The…

This study follows 2,500 adults aged 30-75 in Puerto Rico to track chronic diseases like heart disease, diabetes, and obesity. Researchers will collect data on diet, stress, and lifestyle over two years to identify trends and risk factors. The goal is to guide public health prior…

This study is looking at how the timing of meals, along with genetics, affects weight loss in a Mediterranean population. Researchers will track nearly 6,000 overweight adults to see if eating lunch later makes it harder to lose weight. The goal is to understand if when we eat is…

This study looks at how fasting insulin and insulin resistance differ based on age, sex, race/ethnicity, body weight, and PCOS diagnosis. Researchers will analyze data from 150 adults to find patterns that may explain why some groups face higher metabolic risks. The goal is to be…

This study is testing whether following a Mediterranean-style diet based on U.S. dietary guidelines improves heart health more when combined with weight loss. Researchers will provide all meals for 70 adults with obesity or excess body fat for eight weeks. Participants will be sp…

This study is testing whether a 3-week program of eating walnuts, supervised exercise, and nutrition counseling is practical for American Indian adults recently diagnosed with cancer. The 30 participants will follow the program before starting their cancer treatment. Researchers …

This early-phase study tests the safety and how the body handles a new injection called HEC-007. It involves 126 healthy adults and overweight or obese individuals. Researchers will monitor side effects, measure drug levels in the blood, and check changes in weight and other heal…

This study looks at tiny particles released from fat cells, called extracellular vesicles, and how they relate to blood vessel function in people with obesity. Researchers will compare normal-weight and obese adults, then have obese participants follow a 12-week weight loss diet.…

This study will track 1,200 adults in semi-rural Tanzania to find out how common chronic kidney disease (CKD) is and what factors increase the risk. Participants will have blood and urine tests at the start, after 90 days, and again after one year. The goal is to create better wa…

This study looks at stomach tissue from 100 obese patients undergoing weight-loss surgery and compares it to tissue from lean individuals. Researchers are counting immune cells called macrophages and mast cells, as well as blood vessel density, to see if obesity-related inflammat…

This study looks at how a high-protein drink versus a high-carbohydrate drink influences what people choose to eat afterward. Researchers will test 45 adults with normal weight, overweight, or obesity to see if the type of meal changes their 'food memory' and calorie intake. The …

This early-stage study is testing whether a new weekly injection called NNC0662-0419 changes how the body processes birth control pills and a common painkiller. Researchers will measure drug levels in the blood of 45 women who cannot become pregnant and have overweight or obesity…

This study looks at how limiting eating to an 8-hour window each day (time-restricted feeding) affects the immune system of women with severe obesity. Researchers will compare two groups of women with obesity—one following the 8-hour eating schedule and one eating normally—and al…

This study collects information from medical records and patient visits to see how well endoscopic bariatric therapies (EBTs) work for weight loss and if they are safe. It includes adults who have had or plan to have an EBT within six months. The goal is to track weight changes a…

This early-stage study tests an experimental drug called PF-08653944 in 20 overweight or obese adults. Researchers want to see how it affects the speed at which the stomach empties food, using a common painkiller as a marker. The main goals are to understand the drug's effects an…

This study will check how often muscle loss (sarcopenia) happens in 300 adults with obesity. Researchers will measure muscle mass, strength, and physical function, and look at factors like age, diet, and activity. The goal is to help doctors better identify and manage this condit…

This study aims to see if a specially designed education module helps people with spinal cord injury (SCI) learn about their increased risk for heart disease, obesity, and metabolic problems. Researchers will enroll 250 adults with SCI and measure changes in knowledge, body weigh…

This study looks at how two types of bariatric surgery (RYGB and SG) change bone marrow fat and bone loss in 40 postmenopausal women with obesity. Researchers will measure bone marrow fat before and after surgery and check for links to hormones, blood sugar, and bone markers. The…

This study uses advanced MRI scans to track changes in muscle and fat in the body and heart over 12 months in 50 adults starting semaglutide for type 2 diabetes or weight loss. Participants will undergo MRI scans, physical tests, blood samples, and questionnaires. The goal is to …

This study tracks bone health in 120 teens aged 12–21 with obesity who are either starting a GLP-1 drug (like semaglutide) or following lifestyle changes. Over 24 months, researchers measure bone density and strength using scans and lab tests. The goal is to see if these popular …

This study looks at what happens inside your fat tissue when you lose weight with or without exercise. 68 adults with obesity will lose 10% of their body weight through diet, with some also doing moderate exercise. Researchers will measure insulin sensitivity, fat breakdown, and …

This study follows 1,000 people who are having weight-loss (bariatric) surgery. Researchers will measure changes in weight, body fat, blood sugar, cholesterol, and other health markers before surgery and at several follow-up visits over two years. The goal is to better understand…

This study looks at how tirzepatide, a weight-loss drug, affects muscle mass and strength in adults aged 50 and older with obesity. Researchers want to know if losing weight with this drug also causes harmful muscle loss that could lead to frailty. Twenty participants will take t…

This study looks at how the body's internal clock affects fat tissue in people with and without obesity. Researchers want to see if eating around the clock changes these rhythms. The goal is to better understand obesity, not to test a treatment. 40 healthy, sedentary adults are n…

This study looks at how resistance training (like lifting weights) affects fat breakdown in obese postmenopausal women who also have prediabetes. Researchers want to see if this type of exercise can improve how the body uses fat, which might help prevent type 2 diabetes. The stud…

This study looks at whether eating dinner earlier in the evening, in sync with your body's internal clock, helps burn more fat and control blood sugar. Researchers will compare early versus late dinner in 32 adults—some healthy weight, some with obesity and prediabetes. Participa…

This study looks at how body composition (like weight and fat distribution) relates to airway tone and reactivity. Researchers will use a device called an oscillometer to measure airway resistance in 100 people who are already scheduled for a methacholine challenge test. The goal…

This study looks at why adults who carry extra weight around their belly don't respond to insulin the same way lean people do. Researchers will measure how fat is released from different parts of the body in 48 overweight and lean volunteers. The goal is to better understand how …

This study looks at how a heart hormone called atrial natriuretic peptide (ANP) affects metabolism and heart health. Researchers will test 200 adults with different genetic versions of ANP to see how their bodies respond to exercise and sugar. The goal is to understand why some p…

This early-stage trial is testing whether a one-week course of diazoxide can reduce the production of new fat in the liver. The study involves 25 adults with obesity, insulin resistance, and fatty liver disease. Participants will take either the drug or a placebo and undergo bloo…

This study looks at whether a ketogenic diet can help people with obesity maintain weight loss by increasing the calories their body burns and reducing appetite. Twenty adults will first lose weight on a low-calorie diet, then follow a keto diet for six weeks while researchers me…

This study compares robot-assisted bariatric surgery to standard laparoscopic surgery for obesity. About 482 adults aged 18-70 who qualify for weight-loss surgery will be randomly assigned to one of the two methods. The goal is to see if the robot's higher upfront cost is offset …

This study looks at whether bariatric surgery can change a person's biological age—a measure of how well their body is aging. Researchers will track 300 adults with obesity before and one year after surgery, checking blood markers, fat cell health, gut bacteria, and daily rhythms…

This study aims to understand how people with obesity feel about their quality of life after undergoing endoscopic vertical gastroplasty (GVE), a less invasive alternative to traditional weight-loss surgery. Researchers will interview 20 Italian adults who had the procedure at le…

This study looks at how gut bacteria and the brain communicate in people with obesity, and whether this affects eating control. Researchers will study 116 adults aged 30-65, using brain scans, blood tests, and questionnaires. No treatment is given; the goal is to understand the c…

This study looks at how fat tissue and gut bacteria might influence memory and thinking in people with and without obesity. Researchers will analyze tissue, blood, and stool samples from 100 adults scheduled for surgery. The goal is to uncover new ways obesity affects the brain, …

This study looks at how 12 weeks of endurance exercise affects fat tissue quality and insulin sensitivity in 70 men and women with obesity. Researchers will take small samples of fat and muscle, and use a glucose test to measure insulin response. The goal is to understand how exe…

This study looks at how GLP-1 medications (like Ozempic) affect fat tissue in people with severe obesity who are scheduled for weight-loss surgery. Researchers will compare fat samples from 40 patients—half taking a GLP-1 drug and half not—to see changes in oxytocin and other mar…

This study looks at the best dose of a green fluorescent dye (indocyanine green) used during repeat weight-loss surgery to see blood flow. About 108 people with obesity scheduled for this surgery will get different doses of the dye. The goal is to find the smallest dose that stil…

This study looks at how well young women with overweight or obesity absorb iron from their diet compared to women at a healthy weight. Researchers will track iron levels and losses over time in 70 South African women. The goal is to understand why obesity raises the risk of iron …

This study examines fat tissue from older adults to see how exercise, diet, or senolytic drugs affect cell health and metabolism. Researchers will take small fat samples and use advanced genetic analysis to map cell types and signs of aging. The goal is to better understand how l…

This study looks at whether using ultrasound before and after surgery can help predict difficult breathing tube placement in obese patients. It will compare standard checks with ultrasound measurements and test different types of laryngoscopes. The goal is to improve safety and r…

This study looks at why people with lower income often have a harder time losing weight in behavioral programs. Researchers will track daily experiences and decision-making in 230 adults with obesity. The goal is to understand the barriers and improve future weight loss support.

This study looks at how certain natural fats from food affect inflammation in postmenopausal women, especially those with breast cancer and obesity. Researchers will measure body fat, diet, activity, and quality of life in 60 women divided into four groups. No treatment is given—…

This study looks at how problems with thinking skills (called executive dysfunction) affect physical performance and overall well-being in 100 adults with obesity. Participants will be split into two groups based on their cognitive test scores. The goal is to understand the conne…

This study is testing whether a device called EndoFLIP can predict who will develop acid reflux after sleeve gastrectomy, a common weight-loss surgery. Researchers will measure the flexibility and function of the valve between the stomach and esophagus in 200 adults before surger…

This study follows up on people who previously took the experimental drug INV-347 for obesity. Researchers will monitor their health and measure how much of the drug remains in their blood over time. No new drug is given. The goal is to ensure the drug is safe in the long run.

This study uses two special scanners (HR-pQCT and pQCT) to take detailed pictures of bone and muscle in 1,000 people with conditions that raise the risk of bone loss, like osteoporosis, arthritis, or kidney disease. The goal is to see if these scanners can spot tiny changes in bo…

This study looks at how blocking certain nerve signals for two weeks changes the way the body produces sugar in people who have both obesity and high blood pressure. Twelve participants will receive a placebo, a blood pressure drug, or a nerve-blocking drug in a random order. The…

This study tests two ways of using a breathing machine during weight-loss surgery in people with obesity. One method controls the flow of air, the other controls the volume. Researchers will measure oxygen levels and airway pressures to see which approach keeps lungs working bett…

This study is testing whether a web and mobile phone program can help Hispanic women who have had breast, uterine, or ovarian cancer, along with their adult daughters, eat better and be more active. The program includes 8 online modules. The main goal is to see if the program is …

This study follows 106 people who had weight-loss surgery using the MagDI system, a device that uses magnets to create a new connection between parts of the intestine. The main goal is to see how often internal hernias or bowel blockages happen within one year after surgery. Rese…

This study aims to understand how obesity and aging are connected by looking at blood markers in 650 young and older adults with or without obesity. Participants will provide blood samples and undergo imaging tests to measure biological age and fat distribution. The goal is to la…

This study looks at how a molecule called NAD+ affects brown fat, which helps control weight and lowers the risk of diseases like type 2 diabetes. Researchers will compare normal-weight adults and those with obesity to understand why brown fat becomes less active with age. The go…

This study is building a biobank of DNA samples and health information from 500 adults. Researchers will use this resource to explore how genetic variations relate to heart disease, high blood pressure, diabetes, and obesity. Participants provide samples and data, but no experime…

This study looks at how different types of ultra-processed foods—like those high in fat, sugar, or both—affect feelings of reward and overeating. Fifty adults with obesity will eat various snack foods in the lab and report their cravings and mood. The goal is to understand what m…

This study looks at how losing weight and improving diabetes after bariatric surgery changes brain function and thinking skills. Researchers will also test if a non-invasive nerve stimulation device, started 30 days after surgery, can further improve brain health. The study invol…

This study looks at how the brain reacts to different nutrients (sugar, fat, or protein) in people with obesity compared to healthy-weight individuals. Researchers will use brain scans and blood tests to see if there are differences in brain activity and metabolism after eating. …

This study looks at whether a newer measure of body shape, called the Body Roundness Index (BRI), can better predict difficult airway placement during anesthesia in obese patients compared to standard BMI. Researchers will enroll 90 obese adults undergoing general anesthesia and …

This early-phase study at Mayo Clinic is looking at why insulin doesn't properly control fat breakdown in people with upper-body obesity. Researchers will test the diabetes drug pioglitazone and weight loss programs in 64 adults to see how fat cells respond. The goal is to unders…

This study from Mayo Clinic looks at how inflammation in fat tissue may affect the liver in people with severe obesity. Researchers will measure liver stiffness and fat tissue markers in 60 adults before they have weight-loss surgery. The goal is to better understand why some peo…

This study looks at how tiny particles called extracellular vesicles affect blood flow in people with type 2 diabetes. Researchers will test whether 16 weeks of supervised treadmill exercise can change these particles and improve vascular function. The goal is to understand how e…

This study looks at how moderate wine consumption changes tiny particles called extracellular vesicles, which help cells communicate. Eight healthy adults aged 35-65 will drink red wine, white wine, or water, and researchers will analyze their blood for changes in these particles…

This study looks at how a 12-week running program affects energy use in 80 sedentary adults. Participants will run five times a week, with researchers measuring changes in calories burned, food intake, and activity levels. The goal is to understand why exercise doesn't always lea…

This study explores whether changing gut bacteria with antibiotics can help people keep weight off after losing at least 10% of their body weight. 200 adults with a BMI between 28 and 35 will take either antibiotics or a placebo for 10 days. Researchers will track weight, microbi…

This study aims to find out why some people lose more weight than others after a minimally invasive stomach-shrinking procedure called endoscopic sleeve gastroplasty. Researchers will follow 205 obese adults for 12 months, measuring weight, blood markers, and gut bacteria changes…

This study looks at whether eating oil rich in oleic acid (like some sunflower oils) can improve how fat tissue processes cholesterol in women with obesity. Forty women scheduled for bariatric surgery will take either oleic-rich or regular sunflower oil for 13 weeks. Researchers …

This study follows 832 children from remote farming communities in Pakistan to see how their diet and nutrition affect their growth and development up to age 5. Researchers will measure body mass index, head circumference, and developmental skills using questionnaires. The goal i…

This study looks at how the liver reacts to a sugar injection during bariatric surgery in people with obesity, comparing those with and without fatty liver disease (MASLD). Forty adults will receive either a sugar solution or salt water during surgery, and small tissue samples wi…

This study is tracking 2000 adults who are having weight-loss (bariatric) surgery to learn what factors influence their pain and daily functioning afterward. Researchers will use patient questionnaires to measure pain, side effects, and long-term recovery. The goal is to better u…

This study aims to improve how acyclovir is dosed in people with obesity. Researchers will measure lean body mass and kidney function in 20 healthy volunteers with different BMIs to see if these factors predict how the body clears the drug. The goal is to create better dosing gui…

This study explores whether hormones in a mother's blood and breast milk are linked to her baby's growth, body fat, and eating behavior. Researchers will compare mothers who were normal weight before pregnancy with those who were overweight or obese. About 130 mothers and their i…

This study follows 320 people who had omega gastric bypass surgery 10 years ago to compare long-term side effects between two surgical techniques (150 cm vs 200 cm loop). Researchers will check for serious complications, nutritional problems, and weight loss. The goal is to deter…

This study tests how easy and useful a new digital program called Hope-D is for managing weight during pregnancy and for 6 months after giving birth. The program includes a digital pathway, weight management plans, and coaching. 30 pregnant women with a BMI of 30 or higher will u…

This study looks at how the body processes cortisol (a stress hormone) and bile acids (digestive fluids) in obese women before and after gastric bypass surgery. Researchers want to understand why these changes happen and how they might contribute to weight loss and better health.…

This study looks at how being overweight or having early signs of type 2 diabetes affects the brains of teenagers aged 12 to 17. Researchers will use brain scans and memory tests to see which factors—like insulin resistance or inflammation—are most linked to changes in brain stru…

This study looks at how eating a lot of fructose (a type of sugar) changes the bacteria in your gut and affects your risk for type 2 diabetes and fatty liver. Thirty adults with obesity, diabetes, or fatty liver will eat a high-fructose or high-glucose diet for 12 days, then swit…

This study looks at how exercise improves blood vessel function in people with obesity. Researchers will measure oxidative stress and blood flow in the muscle before and after an 8-week interval training program. The goal is to understand the role of a specific enzyme (NADPH oxid…

This study aims to understand how much insulin the body actually needs to keep blood sugar normal. Ten adults with obesity and high insulin levels will take a drug called diazoxide, which stops the pancreas from making insulin. Researchers will then measure their fasting blood su…

This study aims to understand how a person's weight and blood sugar levels influence the activity of genes in tissues that process sugar and fat. Researchers will collect tissue samples from 20,000 adults undergoing abdominal surgery. The goal is to learn more about the link betw…

This study looks at how different forms of vitamin D work in the body. Researchers will measure free vitamin D (the active form) in healthy adults, pregnant women, and people with hormone or kidney problems. The goal is to see if free vitamin D gives a more accurate picture of vi…

This study looks at how adding beans to the diet affects bowel and metabolic health in 25 overweight adults aged 30-80 who are scheduled for a colonoscopy. Participants will drink a bean smoothie for two weeks, and researchers will measure changes in gut bacteria, blood markers, …

This study uses a noninvasive brain stimulation technique called TMS to investigate how the cerebellum influences feelings of fullness and eating behavior. Researchers will compare brain activity and food choices in 150 healthy adults after they eat or fast. The goal is to better…

This study looks at how a substance called lactate affects blood flow to the brain in people with and without obesity. Researchers will measure brain blood flow and lactate levels during rest and exercise. The goal is to understand if short-term exercise training can improve lact…

This study follows 2,800 pregnant women and their children in Weifang, China, from early pregnancy until the child turns 18. Researchers collect data on diet, lifestyle, and environment, along with blood, urine, and other samples. The goal is to understand how factors before and …

This study is creating a registry of 800 adults aged 18–50 with type 2 diabetes and obesity (called diabesity) in Hong Kong. Participants will receive health checks at the start and again after 3 years, including eye, foot, blood, and urine tests. The goal is to track how their h…

This study follows 50 adults in a community weight loss program to see how daily stress levels relate to weight loss, physical activity, and sleep. Participants will answer quick surveys on their phones and wear a wrist device to track activity and sleep. The goal is to understan…

This study works with clinics in Massachusetts to help people in underserved communities manage weight, get cancer screenings, and improve mental health. It includes 3,600 adults who speak English or Spanish and have obesity, are due for colorectal or cervical cancer screening, o…

This study follows up on mothers and their 14-year-old children from a previous trial where pregnant women with obesity were given diet and exercise advice. Researchers want to see if those lifestyle changes during pregnancy affected the children's body fat and health as teenager…

This study looks at brown fat, a type of body fat that burns energy to produce heat, and compares it to white fat, which stores energy. Researchers will collect fat samples from 40 healthy adults during planned surgeries and analyze them to understand how brown fat works. The goa…

This study aims to find rare genetic changes that lead to severe obesity starting before age 6. Researchers will enroll 500 children and adults who had a very high BMI (above the 99th percentile) at a young age. Participants will answer health questions, have a brief physical exa…

This study looks at how newer weight loss drugs (like semaglutide) compare to gastric bypass surgery in people with severe obesity. Researchers will track changes in muscle, fat, and side effects over a year using body scans and surveys. The goal is to help doctors and patients c…

This study tests a digital tool called PREVENT that helps doctors and patients work together to improve heart health. It is for low-income, rural adults with obesity who are at risk for heart disease. The tool shows patient information and suggests personalized goals for healthy …

This study looks at whether people with obesity who also have binge eating or food addiction experience tastes differently than those without these behaviors. Researchers will measure sweet and salty taste thresholds in 300 participants and compare groups. The goal is to understa…

This study tests an experimental drug called MKP10241 in healthy people, people with obesity, and those with obesity plus type 2 diabetes. Researchers want to see if taking the drug with food changes how it works, and whether different doses are safe. About 68 participants will t…

This study follows 700 people with chronic diseases like arthritis, diabetes, or heart disease for 4 years. Participants wear a small movement sensor for 5 days, three times a year, to track their physical activity and sedentary time. Researchers want to see if a person's unique …

This study tests whether giving people special supplements designed for their type of weight-loss surgery can help keep their vitamin levels healthy. After bariatric surgery, the body absorbs nutrients differently, which can lead to both deficiencies and, from too many supplement…

This study follows 80 obese patients who are planning to have bariatric surgery. Researchers will measure back pain, spine alignment, and spinal fat before and after significant weight loss. The goal is to understand how losing a lot of weight affects the spine and whether it hel…

This study looks at tiny particles called extracellular vesicles released by fat tissue in people with obesity. Researchers want to understand how these particles might affect insulin resistance and differ between men and women. 150 adults scheduled for bariatric surgery will pro…

This study looks at how 12 weeks of aerobic exercise changes DNA methylation—a chemical tag on genes—in fat tissue of 80 people with obesity who are scheduled for bariatric surgery. Researchers want to see if these changes improve blood vessel function and reduce inflammation. Th…

This study looks at how GLP-1 medications (like Ozempic or Wegovy) affect people's attitudes toward food and what they choose to eat. Researchers will use a virtual reality buffet to measure food selections before starting the medication and again after three months. The goal is …

This study looks at how eating and sleeping at mismatched times (like shift workers do) affects weight regulation. Researchers will track 42 adults with overweight or obesity, measuring energy use, body composition, and brain responses to food. The goal is to understand whether a…

This study aims to understand why night shift work is linked to obesity. Researchers will compare 1000 night shift and day workers across five European countries, measuring body composition, diet, and biological markers like hormones and inflammation. The goal is to uncover the m…

This study looks at whether high-intensity interval training (HIIT) can change how the brain works in people who have regained weight after bariatric surgery. Researchers will use brain scans and questionnaires to measure changes in brain connectivity, appetite, and mood. The goa…

This study examines whether community park-based fitness programs can improve cardiovascular health in adults aged 50 and older. Researchers will analyze data from 1,000 participants who took part in exercise sessions including aerobics, strength training, and balance exercises. …

This study follows 5,000 children in a Miami-Dade park-based after-school program called Fit2Play. The program includes daily physical activity and nutrition lessons. Researchers will track changes in weight, fitness, blood pressure, and mental health over time to see if the prog…

This study from the University of Michigan is recruiting 3,200 people to understand why some people lose weight and keep it off while others struggle. Participants will undergo a range of tests, including blood work, body composition scans, and fitness assessments. The goal is to…