GUT MICROBIOME

This study looks at whether eating wild blueberries can improve heart health, thinking skills, and gut bacteria in Black and White adults aged 45-65 with high blood pressure. Participants will eat blueberries daily and have their blood pressure, artery stiffness, and cognitive fu…

This study tests whether following a Mediterranean-style diet for 18 months is practical and beneficial for people with Parkinson's disease. Researchers will see if the diet is easy to stick with and if it leads to changes in gut bacteria or Parkinson's symptoms. About 40 partici…

This pilot study tests whether the dietary supplement L-Phenylalanine can change the levels of fungi (like Candida) and a specific metabolite in the gut of 20 healthy adults. Researchers will measure these changes in stool, swabs, and blood samples over time. The goal is to bette…

This study follows 200 healthy transgender people for five years after they start hormone replacement therapy. Researchers will track changes in gut bacteria, blood markers, and heart risk factors to understand how sex hormones influence the gut-heart connection. The goal is to l…

The AGEWISE study is observing 300 healthy women aged 40 to 64 in Portugal to understand how gut bacteria change with hormones during menopause. Participants provide stool and blood samples and answer health and diet questionnaires. Researchers hope to uncover connections between…

This study tests a goat milk-based formula alternative (GMDFA) in 15 infants aged 8-10 weeks who cannot exclusively breastfeed. Researchers compare growth, gut health, and nutrition markers between infants fed GMDFA, undiluted goat milk, or breast milk. The goal is to see if GMDF…

This study looks at how different amounts of supervised indoor cycling change gut bacteria and related substances in healthy men aged 18 to 45. Participants will be placed into one of three groups: no structured training, moderate cycling, or high-load cycling. Researchers will m…

This study enrolls 250 infants born by C-section to see if personalized diet and probiotic advice can improve their gut bacteria and reduce early signs of eczema. Babies provide stool samples over two years, and parents get tailored recommendations based on their baby's microbiom…

This study compares eating fresh mangoes versus low-fat cookies to see how each affects gut health, and whether changes in gut bacteria relate to mood, sexual health, and skin hydration. About 60 generally healthy adults will participate. The goal is to understand if a simple foo…

This study is a national registry that will follow up to 4,000 people who receive a fecal microbiota transplant (FMT) for C. diff infection or other gut conditions. Researchers will track side effects, infections, and whether the disease comes back. The goal is to better understa…

This pilot study is testing whether taking curcumin (the active ingredient in turmeric) for two weeks can cross into the brain and attach to amyloid beta proteins, which are linked to Alzheimer's disease. Researchers will use eye imaging to detect these proteins and also check ho…

This study will follow 35 people who recently had a spinal cord injury to see how their gut bacteria change over the first year. Researchers will collect blood, stool samples, and bowel function surveys at the start, 6 months, and 12 months. The goal is to understand how the gut …

This pilot study at the University of Nevada, Las Vegas tests whether a 6-week nutrition program focused on herbs and spices can help college students with poor eating habits improve their diet quality. Thirty students will attend group sessions, taste foods with herbs and spices…

This study looks at whether replacing a narrowed heart valve (TAVI) changes the types of bacteria living in the gut. Researchers will collect stool and blood samples from 40 patients before and after the procedure. The goal is to see if improved blood flow from the new valve help…

This study is testing whether a special nutrition shake (Ensure Surgery Immunonutrition) can improve gut health and reduce inflammation in heart failure patients awaiting LVAD surgery. Researchers will give the shake to 50 hospitalized patients before their operation and track ch…