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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: "bariatric" Condition: Obesity Clear all
Completed No phase listed Observational Results available

Diabetes and Gastric By- Pass

NCT01153516
View directory record Official record
Conditions
Type 2 Diabetes
Interventions
Not listed
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Mar 26, 2019 · Synced Jul 24, 2026, 5:04 AM EDT
Completed Phase 4 Interventional Results available

Apixaban Pharmacokinetics in Bariatric Patients (APB)

NCT02406885
View directory record Official record
Conditions
Bariatric Surgery, Obesity
Interventions
Apixaban
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 65 Years
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 21, 2020 · Synced Jul 24, 2026, 5:04 AM EDT
Completed Phase 3 Interventional

Laparoscopic Adjustable Gastric Banding Versus Laparoscopic Sleeve Gastrectomy

NCT00434655
View directory record Official record
Conditions
Morbid Obesity
Interventions
Laparoscopic restrictive procedure
Procedure
Lead sponsor
North Texas Veterans Healthcare System
Federal
Eligibility
18 Years to 65 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Dec 14, 2009 · Synced Jul 24, 2026, 5:04 AM EDT
Enrolling by invitation No phase listed Observational

Physiologic and Functional Adaptations of Insulin Sensitive Tissues

NCT03407833
View directory record Official record
Conditions
Diabetes, Insulin Resistance, Obesity, Bariatric Surgery Candidate, Roux-en-y Gastric Bypass, Liver Diseases
Interventions
Endoscopy biopsy, Surgical biopsy, Mixed-meal tolerance test, Excised Liver Tissue Sampling
Other
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years and older
Enrollment
500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2028
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Dec 17, 2025 · Synced Jul 24, 2026, 5:04 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

The Effects of Metabolic & Bariatric Surgery on Lipid Metabolism, Myeloid-Derived Suppressor Cells, and Cancer Cell Biology

NCT06059651
View directory record Official record
Conditions
Obesity
Interventions
Metabolic & Bariatric Surgery
Procedure
Lead sponsor
Pennington Biomedical Research Center
Other
Eligibility
35 Years to 60 Years · Female only
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
Baton Rouge, Louisiana
Source: ClinicalTrials.gov public record
Updated Feb 16, 2025 · Synced Jul 24, 2026, 5:04 AM EDT
Not listed No phase listed Observational Accepts healthy volunteers

Effects of Alcohol After Bariatric Surgery

NCT01843257
View directory record Official record
Conditions
Obesity
Interventions
Alcohol challenge test Alcohol visit first, Alcohol challenge test Placebo visit first
Other
Lead sponsor
University of Illinois at Urbana-Champaign
Other
Eligibility
21 Years to 65 Years · Female only
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2021
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Apr 26, 2021 · Synced Jul 24, 2026, 5:04 AM EDT
Terminated Not applicable Interventional

Effects of a Novel Dietary Intervention on Body Composition After Laparoscopic Gastric Bypass Surgery

NCT01041261
View directory record Official record
Conditions
Obesity, Morbid Obesity
Interventions
BariatrX Essentials 360 Treatment
Dietary Supplement
Lead sponsor
MetaProteomics LLC
Industry
Eligibility
25 Years and older · Female only
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 12, 2012 · Synced Jul 24, 2026, 5:04 AM EDT
Completed Not applicable Interventional

Effect of Bariatric Surgery on Mechanisms of Type 2 Diabetes

NCT01278823
View directory record Official record
Conditions
Obesity, Type 2 Diabetes
Interventions
laparoscopic roux en y gastric bypass operation, medical management
Procedure · Other
Lead sponsor
The Cleveland Clinic
Other
Eligibility
18 Years to 60 Years
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2017
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Jul 10, 2019 · Synced Jul 24, 2026, 5:04 AM EDT
Completed Not applicable Interventional

THE ENLIGHTEN STUDY

NCT03261453
View directory record Official record
Conditions
Obesity, Overweight
Interventions
Active Elipse Device, Elipse Sham Device
Device
Lead sponsor
Allurion Technologies
Industry
Eligibility
22 Years to 65 Years
Enrollment
400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
12
States / cities
Scottsdale, Arizona • Aurora, Colorado • Bolingbrook, Illinois + 9 more
Source: ClinicalTrials.gov public record
Updated Feb 1, 2024 · Synced Jul 24, 2026, 5:04 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Exendin-9,39 and Satiety After Bariatric Surgery

NCT02779075
View directory record Official record
Conditions
Obesity
Interventions
Saline, Exendin-9,39
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
20 Years to 70 Years
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2019
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Apr 30, 2020 · Synced Jul 24, 2026, 5:04 AM EDT
Completed Phase 3 Interventional

Laparoscopic Sleeve Gastrectomy With and Without Omentectomy

NCT00434525
View directory record Official record
Conditions
Morbid Obesity
Interventions
Laparoscopic restrictive procedure, Sleeve gastrectomy
Procedure
Lead sponsor
North Texas Veterans Healthcare System
Federal
Eligibility
18 Years to 65 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Dec 14, 2009 · Synced Jul 24, 2026, 5:04 AM EDT
Terminated No phase listed Observational

Long-Term Follow-up of Ohio State University Medical Center (OSUMC) Bariatric Patients

NCT00700843
View directory record Official record
Conditions
Obesity
Interventions
Not listed
Lead sponsor
Ohio State University
Other
Eligibility
18 Years to 89 Years
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated May 14, 2015 · Synced Jul 24, 2026, 5:04 AM EDT
Enrolling by invitation No phase listed Observational Accepts healthy volunteers

Adaptive Immune Response in Visceral and Subcutaneous Fat: Role in Human Insulin Resistance

NCT04708535
View directory record Official record
Conditions
Insulin Resistance, Insulin Sensitivity, Obesity, Inflammation
Interventions
Not listed
Lead sponsor
Stanford University
Other
Eligibility
30 Years to 65 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2026
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated May 12, 2026 · Synced Jul 24, 2026, 5:04 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

fMRI and Appetite-Related Hormones Pre and Post Obesity Surgery

NCT01583725
View directory record Official record
Conditions
Obesity
Interventions
Liquid meal responses, fMRI responses to food-cues
Procedure · Behavioral
Lead sponsor
New York Obesity and Nutrition Research Center
Other
Eligibility
18 Years to 65 Years
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2015
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 26, 2024 · Synced Jul 24, 2026, 5:04 AM EDT
Completed No phase listed Observational

De Novo Lipogenesis in Severity of NAFLD

NCT03683589
View directory record Official record
Conditions
Nonalcoholic Fatty Liver Disease, Nonalcoholic Steatohepatitis, Bariatric Surgery Candidate, Obesity, Morbid
Interventions
Not listed
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
22 Years to 65 Years
Enrollment
49 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated Dec 18, 2024 · Synced Jul 24, 2026, 5:04 AM EDT
Completed No phase listed Observational

Comparison of Obesity Alleles Among Diverse Demographic Patients

NCT01396096
View directory record Official record
Conditions
Obesity
Interventions
Not listed
Lead sponsor
NYU Langone Health
Other
Eligibility
Not listed
Enrollment
2,500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2025
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 18, 2026 · Synced Jul 24, 2026, 5:04 AM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

Comparison Between Pyloric Preserving and Non-Pyloric Preserving Bariatric Surgery With Glucose Challenge

NCT00998374
View directory record Official record
Conditions
Hypoglycemia, Obesity
Interventions
Not listed
Lead sponsor
Medtronic - MITG
Industry
Eligibility
19 Years and older
Enrollment
62 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2013
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 20, 2014 · Synced Jul 24, 2026, 5:04 AM EDT
Completed Phase 1 Interventional

Effect of a Monthly High Dose of Vitamin D3 on Bariatric Surgery Patients

NCT02477956
View directory record Official record
Conditions
Morbid Obesity, Vitamin D Deficiency
Interventions
vitamin D3 (Replesta), vitamin D
Dietary Supplement
Lead sponsor
Texas Tech University
Other
Eligibility
18 Years to 60 Years
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
1
States / cities
Lubbock, Texas
Source: ClinicalTrials.gov public record
Updated Jun 22, 2015 · Synced Jul 24, 2026, 5:04 AM EDT
Completed Not applicable Interventional Results available

Laparoscopic Gastric Bypass vs LAP-BAND for Treatment of Morbid Obesity

NCT00247377
View directory record Official record
Conditions
Morbid Obesity
Interventions
Gastric bypass surgery, Lap-Band
Procedure
Lead sponsor
University of California, Irvine
Other
Eligibility
18 Years to 60 Years
Enrollment
197 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2009
U.S. locations
1
States / cities
Orange, California
Source: ClinicalTrials.gov public record
Updated Apr 23, 2023 · Synced Jul 24, 2026, 5:04 AM EDT
Terminated No phase listed Observational

Loop Duodenal Switch Surgery in Morbidly Obese Patients

NCT02671331
View directory record Official record
Conditions
Obesity, Type-2 Diabetes Mellitus
Interventions
Loop duodenal switch
Procedure
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
18 Years to 70 Years
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jul 6, 2016 · Synced Jul 24, 2026, 5:04 AM EDT
Terminated Not applicable Interventional

How Gas-Filled Intragastric Balloons or Endoscopic Sleeve Gastroplasty Affect Hunger, Hunger Hormones, and Gastric Emptying Compared to Meal Replacements

NCT04306445
View directory record Official record
Conditions
Obesity
Interventions
GF-IGB: Obalon Balloon, Medically Supervised Meal Replacement Program: My New Weigh, Endoscopic sleeve gastroplasty: (ESG)
Device · Dietary Supplement · Procedure
Lead sponsor
University of Colorado, Denver
Other
Eligibility
22 Years to 65 Years
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Jun 1, 2026 · Synced Jul 24, 2026, 5:04 AM EDT
Active, not recruiting Not applicable Interventional

Hepatic Energy Fluxes in NASH and NAS Patients

NCT03997422
View directory record Official record
Conditions
NASH - Nonalcoholic Steatohepatitis, NAS, Overweight or Obesity, Weight Loss, Bariatric Surgery Candidate
Interventions
Vertical Sleeve Gastrectomy (VSG)
Procedure
Lead sponsor
University of Minnesota
Other
Eligibility
40 Years to 67 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2030
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 3, 2026 · Synced Jul 24, 2026, 5:04 AM EDT
Enrolling by invitation No phase listed Observational

Bariatric Surgery Registry

NCT01055054
View directory record Official record
Conditions
Obesity, Morbid
Interventions
Not listed
Lead sponsor
Virginia Commonwealth University
Other
Eligibility
12 Years to 75 Years
Enrollment
8,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1980 – 2026
U.S. locations
1
States / cities
Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Nov 23, 2025 · Synced Jul 24, 2026, 5:04 AM EDT
Completed No phase listed Observational

A Master Protocol for Semaglutide Effects on Cardiovascular and Obesity-related Outcomes in People With Overweight or Obesity in the Real World

NCT07141914
View directory record Official record
Conditions
Overweight, Obesity, Heart Failure (HF), Atherosclerotic Cardiovascular Disease (ASCVD), Primary Prevention
Interventions
No treatment given
Other
Lead sponsor
Novo Nordisk A/S
Industry
Eligibility
45 Years and older
Enrollment
285,327 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025
U.S. locations
1
States / cities
Plainsboro, New Jersey
Source: ClinicalTrials.gov public record
Updated Jan 22, 2026 · Synced Jul 24, 2026, 5:04 AM EDT