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Showing 1–24 of 244 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Morbid Obesity Clear all
Withdrawn No phase listed Observational

Bariatric Surgery Outcomes

NCT01057784
View directory record Official record
Conditions
Morbid Obesity
Interventions
Bariatric surgery.
Procedure
Lead sponsor
University of California, Los Angeles
Other
Eligibility
Not listed
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
2
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Dec 7, 2014 · Synced Sep 4, 2026, 7:10 PM EDT
Completed No phase listed Observational

Laparoscopic Revision of Jejunoileal Bypass to Gastric Bypass

NCT01040533
View directory record Official record
Conditions
Clinically Severe Obesity, Metabolic Complications After Jejunoileal Bypass, Nutritional Complications After Jejunoileal Bypass, Obesity Recidivism, Inadequate Initial Weight Loss, Intestinal Malabsorptive Syndrome, Protein Malnutrition
Interventions
Not listed
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years to 65 Years
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
1
States / cities
Fresno, California
Source: ClinicalTrials.gov public record
Updated Dec 28, 2009 · Synced Sep 4, 2026, 7:10 PM EDT
Completed Not applicable Interventional

Connect for Health Pediatric Weight Management Program

NCT04042493
View directory record Official record
Conditions
Overweight and Obesity, Severe Obesity
Interventions
Connect for Health
Behavioral
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
2 Years to 12 Years
Enrollment
19,304 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
3
States / cities
Denver, Colorado • Boston, Massachusetts • Greenville, South Carolina
Source: ClinicalTrials.gov public record
Updated Mar 21, 2023 · Synced Sep 4, 2026, 7:10 PM EDT
Completed Phase 2 Interventional Results available

Topiramate in Adolescents With Severe Obesity

NCT01859013
View directory record Official record
Conditions
Obesity, Morbid, Obesity, Weight Loss
Interventions
Topiramate, Placebo
Drug · Other
Lead sponsor
University of Minnesota
Other
Eligibility
12 Years to 17 Years
Enrollment
34 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2017
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Sep 4, 2026, 7:10 PM EDT
Completed Phase 1 Interventional

A High Resolution Pharmacokinetic/Pharmacodynamic Model of Propofol in Morbidly Obese Subjects

NCT01591148
View directory record Official record
Conditions
Morbid Obesity
Interventions
propofol
Drug
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 70 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2017
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Dec 28, 2017 · Synced Sep 4, 2026, 7:10 PM EDT
Completed Not applicable Interventional Results available

Development of a Weight Maintenance Intervention for Bariatric Surgery Patients

NCT03246672
View directory record Official record
Conditions
Obesity, Morbid
Interventions
maintenance intervention
Behavioral
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years and older
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Aug 18, 2019 · Synced Sep 4, 2026, 7:10 PM EDT
Not yet recruiting Not applicable Interventional

Continuous Glucose Monitoring in Metabolic Surgery

NCT07095972
View directory record Official record
Conditions
Obesity (Disorder)
Interventions
Abbot Freestyle Libre CGM
Device
Lead sponsor
Pennington Biomedical Research Center
Other
Eligibility
20 Years to 60 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Baton Rouge, Louisiana
Source: ClinicalTrials.gov public record
Updated Jul 8, 2026 · Synced Sep 4, 2026, 7:10 PM EDT
Terminated Phase 1 Interventional

Rosuvastatin Interethnic PK Study

NCT02215174
View directory record Official record
Conditions
Statin Pharmacokinetics Pre and Post Gastric Bypass Surgery
Interventions
Rosuvastatin
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years to 65 Years
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jan 17, 2020 · Synced Sep 4, 2026, 7:10 PM EDT
Completed No phase listed Observational

Laparoscopic Revision of Vertical Banded Gastroplasty to Gastric Bypass

NCT01041131
View directory record Official record
Conditions
Clinically Severe Obesity, Inadequate Weight Loss, Obesity Recidivism
Interventions
Not listed
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years to 65 Years
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009
U.S. locations
1
States / cities
Fresno, California
Source: ClinicalTrials.gov public record
Updated Dec 31, 2009 · Synced Sep 4, 2026, 7:10 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Contributing Factors in the Pathobiology of Airway Remodeling in Obesity

NCT03115632
View directory record Official record
Conditions
Asthma, Obesity, Obesity, Morbid, Bariatric Surgery Candidate
Interventions
Not listed
Lead sponsor
Duke University
Other
Eligibility
18 Years to 60 Years
Enrollment
31 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2023
U.S. locations
2
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Sep 21, 2023 · Synced Sep 4, 2026, 7:10 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Fentanyl Metabolism in Obese Adolescents

NCT01955993
View directory record Official record
Conditions
Morbid Obesity
Interventions
Not listed
Lead sponsor
Children's National Research Institute
Other
Eligibility
12 Years to 20 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2013
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Oct 7, 2013 · Synced Sep 4, 2026, 7:10 PM EDT
Withdrawn No phase listed Observational

OnQ Pain Pump Effectiveness in Post Operative Pain Control in Bariatric Patients

NCT03159130
View directory record Official record
Conditions
Morbid Obesity
Interventions
Not listed
Lead sponsor
William Beaumont Army Medical Center
Federal
Eligibility
18 Years to 80 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
El Paso, Texas
Source: ClinicalTrials.gov public record
Updated May 17, 2017 · Synced Sep 4, 2026, 7:10 PM EDT
Completed No phase listed Observational

Neurohumoral Control of Intestinal Electrical and Mechanical Activity

NCT00852553
View directory record Official record
Conditions
Morbid Obesity
Interventions
Not listed
Lead sponsor
University of California, Davis
Other
Eligibility
Not listed
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2012
U.S. locations
2
States / cities
Sacramento, California • Reno, Nevada
Source: ClinicalTrials.gov public record
Updated May 29, 2017 · Synced Sep 4, 2026, 7:10 PM EDT
Completed Phase 4 Interventional Results available

Aromatase Inhibitors and Weight Loss in Severely Obese Hypogonadal Male Veterans (Pilot)

NCT02959853
View directory record Official record
Conditions
Hypogonadism, Severe Obesity
Interventions
Anastrazole, weight loss
Drug · Behavioral
Lead sponsor
Baylor College of Medicine
Other
Eligibility
35 Years to 65 Years · Male only
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jan 29, 2020 · Synced Sep 4, 2026, 7:10 PM EDT
Active, not recruiting No phase listed Observational

Biological Sample Repository for Gastrointestinal Disorders

NCT05874726
View directory record Official record
Conditions
Obesity, Obesity, Morbid, Obesity, Primary, Gastro-Intestinal Disorder, Overweight and Obesity, Overweight, Overweight or Obesity, Diabetes Type 2, Diabetes Mellitus, Diabetes Mellitus, Type 2, Hypertension, Hyperlipidemias, Sleep Apnea, GERD, Gastroesophageal Reflux, Musculoskeletal Pain Disorder, Cancer
Interventions
Blood Collection, Urine Collection, Tissue Sample Collection
Diagnostic Test
Lead sponsor
Pichamol Jirapinyo, MD, MPH
Other
Eligibility
18 Years and older
Enrollment
500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2029
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 1, 2025 · Synced Sep 4, 2026, 7:10 PM EDT
Terminated Not applicable Interventional Results available

Surgical Intervention in Bariatric Patients: Excess Weight Loss in the Morbidly Obese Following Gastric Plication

NCT01077193
View directory record Official record
Conditions
Morbid Obesity
Interventions
Gastric Plication
Procedure
Lead sponsor
Ethicon Endo-Surgery
Industry
Eligibility
18 Years to 65 Years
Enrollment
44 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
2
States / cities
Cleveland, Ohio • Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Feb 6, 2014 · Synced Sep 4, 2026, 7:10 PM EDT
Completed No phase listed Observational

Assessment of Insulin Resistance, NAFLD, Predictors of CV Morbidity, and Subcutaneous Adipose and Visceral Adipose Gene Expression in Patients Undergoing Gastric Bypass Surgery

NCT01007955
View directory record Official record
Conditions
Morbid Obesity, Insulin Resistance, Non-Alcoholic Fatty Liver Disease
Interventions
Not listed
Lead sponsor
University of Massachusetts, Worcester
Other
Eligibility
18 Years to 65 Years
Enrollment
61 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2012
U.S. locations
1
States / cities
Worcester, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 23, 2012 · Synced Sep 4, 2026, 7:10 PM EDT
Completed No phase listed Observational

Outcomes of Bariatric Surgery/UMMMC Bariatric Surgery Registry

NCT01153308
View directory record Official record
Conditions
Morbid Obesity
Interventions
Observational Study
Other
Lead sponsor
University of Massachusetts, Worcester
Other
Eligibility
18 Years to 80 Years
Enrollment
4,785 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2015
U.S. locations
1
States / cities
Worcester, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 18, 2015 · Synced Sep 4, 2026, 7:10 PM EDT
Withdrawn Phase 4 Interventional Accepts healthy volunteers

Laparoscopic Sleeve Gastrectomy Plus Weight Watchers vs. Weight Watchers Alone in Underserved Minority Women

NCT01929850
View directory record Official record
Conditions
Morbid Obesity
Interventions
Laparscopic Sleeve Gastrectomy, Weight Watchers Program
Procedure · Behavioral
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years to 65 Years · Female only
Healthy volunteers
Accepts healthy volunteers
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated May 7, 2015 · Synced Sep 4, 2026, 7:10 PM EDT
Completed No phase listed Observational

Characteristics of Prader-Willi Syndrome and Early-onset Morbid Obesity

NCT00375089
View directory record Official record
Conditions
Prader-Willi Syndrome, Obesity
Interventions
Group 1, Group 2
Other
Lead sponsor
University of Florida
Other
Eligibility
Up to 60 Years
Enrollment
392 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2014
U.S. locations
4
States / cities
Orange, California • Gainesville, Florida • Kansas City, Kansas + 1 more
Source: ClinicalTrials.gov public record
Updated Sep 21, 2014 · Synced Sep 4, 2026, 7:10 PM EDT
Completed Not applicable Interventional

Efficacy of Vitamin D Supplementation in Obese Children

NCT02956408
View directory record Official record
Conditions
Obesity, Pediatric, Obesity, Childhood, Obesity, Morbid, Vitamin D Deficiency
Interventions
Vitamin D3
Dietary Supplement
Lead sponsor
Columbia University
Other
Eligibility
5 Years to 11 Years
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 4, 2020 · Synced Sep 4, 2026, 7:10 PM EDT
Active, not recruiting Not applicable Interventional

The TRIABETES - ARMMS-T2D Study: A Randomized Trial to Compare Surgical and Medical Treatments for Type 2 Diabetes

NCT01047735
View directory record Official record
Conditions
Type 2 Diabetes Mellitus, Obesity
Interventions
Roux-en-Y Gastric Bypass Surgery, Laparoscopic Adjustable Gastric Banding, Lifestyle Weight Loss Intervention
Procedure · Behavioral
Lead sponsor
University of Pittsburgh
Other
Eligibility
25 Years to 55 Years
Enrollment
69 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2028
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 10, 2026 · Synced Sep 4, 2026, 7:10 PM EDT
Completed Phase 3 Interventional Results available

Study of VI-0521 Compared to Placebo in Treatment of Diabetes and Obesity in Adults With Obesity-Related Co-Morbid Conditions

NCT00553787
View directory record Official record
Conditions
Obesity, Type 2 Diabetes
Interventions
VI-0521
Drug
Lead sponsor
VIVUS LLC
Industry
Eligibility
18 Years to 70 Years
Enrollment
2,487 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
6
States / cities
Birmingham, Alabama • Ridgefield, Connecticut • New York, New York + 3 more
Source: ClinicalTrials.gov public record
Updated Sep 9, 2012 · Synced Sep 4, 2026, 7:10 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Role of the Omentum in the Treatment of Morbid Obesity

NCT00212160
View directory record Official record
Conditions
Obesity
Interventions
omentectomy
Procedure
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
66 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2011
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jan 31, 2017 · Synced Sep 4, 2026, 7:10 PM EDT