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Weight Loss Surgery clinical trials recruiting in the U.S.
15 studies for Weight Loss Surgery are recruiting participants at sites across the United States.
Is weight loss surgery for you? Learn about types of surgery including bariatric surgery, bypass surgery, gastric banding, and more.
Recently updated studies
Physical and Behavioral Traits of Overweight and Obese Adults
RecruitingObservational studyHealthy volunteers welcome
Ages 18 to 100 · All sexes · Updated Sep 28, 2026 · NCT00428987Impact GLP-1 Agonists Following Bariatric
RecruitingPhase 4
Ages 18 and older · All sexes · Updated Sep 10, 2026 · NCT06132477Brown Adipose Tissue Activation by Spinal Cord Stimulation
Recruiting
Ages 21 to 70 · All sexes · Updated Aug 25, 2026 · NCT04326192Postextubation Use of Noninvasive Respiratory Support in Severely Obese Patients
Recruiting
Ages 18 and older · All sexes · Updated Aug 7, 2026 · NCT05918575Induction of Labor in Morbidly Obese Patients
RecruitingEarly phase 1
Ages 18 and older · Women · Updated Jul 29, 2026 · NCT06199154Trans-nasal Endoscopy for Bariatric Patients
Recruiting
Ages 18 to 90 · All sexes · Updated Jun 25, 2026 · NCT06200961Metabolic Responses to Bariatric Surgery
RecruitingObservational study
Ages 18 to 55 · All sexes · Updated May 18, 2026 · NCT02024542Effect of Limb Length Ratio on Roux-en-Y Gastric Bypass Outcomes (CLIMB II Study)
Recruiting
Ages 18 to 70 · All sexes · Updated Mar 20, 2026 · NCT06293703Long-term, Substantial Weight Loss and Insulin Regulation of Lipolysis
Recruiting
Ages 18 to 65 · All sexes · Updated Mar 3, 2026 · NCT03868592Efficacy and Safety of Endoscopic Antral Myotomy as a Novel Weight Loss Procedure
RecruitingObservational study
Ages 18 to 70 · All sexes · Updated Mar 2, 2026 · NCT05711758Investigating the Link Between Type 2 Immunity and NAFLD in Human Obesity
RecruitingObservational studyHealthy volunteers welcome
Ages 30 to 70 · All sexes · Updated Jan 28, 2026 · NCT04232566Time-restricted Eating Among Pregnant Females With Severe Obesity
RecruitingHealthy volunteers welcome
Ages 18 to 44 · Women · Updated Jan 23, 2026 · NCT06477120Optimizing Portal Hypertension With TIPS and Interval Metabolic Surgery for Advanced Liver Disease
RecruitingPhase 4
Ages 18 to 70 · All sexes · Updated Dec 23, 2025 · NCT07058155Gut Microbiota in Metabolic Surgery
RecruitingObservational study
Ages 21 to 65 · All sexes · Updated Nov 4, 2025 · NCT05000996Whole Transcriptome Profiling and Metabolic Phenotyping in Children With ROHHAD Syndrome
RecruitingObservational study
Ages 2 to 20 · All sexes · Updated Oct 21, 2025 · NCT02602769From ClinicalTrials.gov, data retrieved Sep 29, 2026. Each study sets its own eligibility; the study team decides who can join.