Which surgery is better for mental health? new study compares sleeve vs. bypass
NCT ID NCT07600411
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
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 understand how each surgery affects mental health, not to test a new treatment.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 100 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Mar 2026
- Expected to finish
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Sep 2027
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 to 60 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Age between 18 and 60 years * Body Mass Index (BMI) ≥ 35 kg/m² without comorbidities, OR BMI ≥ 30 kg/m² with at least one obesity-related medical comorbidity (e.g., type 2 diabetes, hypertension, obstructive sleep apnea, dyslipidemia) * Patient is generally fit for laparoscopic surgery and general anesthesia as determined by preoperative evaluation * Patient agrees to comply with postoperative lifestyle changes (dietary modifications and follow-up schedule) * Willing and able to provide written informed consent Exclusion Criteria: * Age \< 18 years or \> 60 years * Inability or unwillingness to adhere to postoperative lifestyle changes * Contraindication to surgery: American Society of Anesthesiologists (ASA) class IV or higher * History of receiving radiotherapy or chemotherapy for cancer treatment * Active substance use disorder or uncontrolled severe psychiatric illness that would impair ability to comply with study procedures (e.g., active psychosis, severe suicidal ideation) * Pregnant or breastfeeding women (pregnancy test performed preoperatively per institutional protocol) * Previous bariatric surgery (revisional surgery excluded) * Untreated thyroid disorder (e.g., hypothyroidism or hyperthyroidism)
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Faculty of Medicine Cairo University
RECRUITINGCairo, Al-Manial Cairo, 11956, Egypt
More trials for these conditions
Other studies related to the condition(s) this trial covers.
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- A pill for obesity? early human trial puts MDR-001 to the test
- Can a weekly shot help people who still struggle with weight after bariatric surgery?
- Do GLP-1 Weight-Loss drugs change how teens eat and feel?
- Can electrical muscle stimulation boost exercise benefits after menopause?
- Can a cold cloth on the neck calm Post-Surgery nausea?