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ClinicalTrials.gov public records Last synced Sep 30, 2026, 2:09 AM EDT

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Showing 25–48 of 453 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Bariatric Surgical Procedure Clear all
Terminated Phase 2 Interventional Results available

The Effect of Surgically Induced Weight Loss on Endocrine Function, Cardiovascular Function and Body Composition

NCT00686972
View directory record Official record
Conditions
Bariatric Surgery
Interventions
GLP-1
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
21 Years to 65 Years
Enrollment
51 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 2, 2017 · Synced Sep 30, 2026, 2:09 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

RemI for Post-Bariatric Surgery Weight Regain

NCT06292936
View directory record Official record
Conditions
Obesity, Bariatric Surgery Candidate
Interventions
Acceptance-Based Behavioral Intervention
Behavioral
Lead sponsor
Temple University
Other
Eligibility
18 Years to 70 Years
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2028
U.S. locations
2
States / cities
Chicago, Illinois • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 3, 2026 · Synced Sep 30, 2026, 2:09 AM EDT
Completed Not applicable Interventional

Endoscopic Gastric Mucosal Devitalization (GMD) as a Primary Obesity Therapy

NCT03526263
View directory record Official record
Conditions
Obesity, Obesity, Morbid, Obesity; Endocrine, Bariatric Surgery Candidate
Interventions
Gastric mucosal devitalization
Procedure
Lead sponsor
Johns Hopkins University
Other
Eligibility
28 Years to 60 Years
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 24, 2019 · Synced Sep 30, 2026, 2:09 AM EDT
Terminated No phase listed Observational Accepts healthy volunteers

BAriatric Surgery Induced Chromosomal Change

NCT05903521
View directory record Official record
Conditions
Obesity, Morbid
Interventions
Not listed
Lead sponsor
The Cleveland Clinic
Other
Eligibility
18 Years and older
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
Weston, Florida
Source: ClinicalTrials.gov public record
Updated Oct 24, 2025 · Synced Sep 30, 2026, 2:09 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Metabolism and Bariatric Surgery Study

NCT03371368
View directory record Official record
Conditions
Insulin Resistance, Obesity
Interventions
Roux-en-Y Gastric Bypass (RYGBP), Sleeve Gastrectomy (SG), Very Low Calorie Diet (VLCD)
Procedure · Behavioral
Lead sponsor
Columbia University
Other
Eligibility
18 Years to 65 Years
Enrollment
70 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2023
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated May 7, 2025 · Synced Sep 30, 2026, 2:09 AM EDT
Completed Not applicable Interventional Results available

Effect of Single Dose Ketamine and Magnesium on Postoperative Pain in Patients Undergoing Bariatric Surgery

NCT02334059
View directory record Official record
Conditions
Obesity
Interventions
Ketamine, Ketamine plus magnesium, Placebo
Drug · Other
Lead sponsor
Milton S. Hershey Medical Center
Other
Eligibility
18 Years to 80 Years
Enrollment
108 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
1
States / cities
Hershey, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 1, 2020 · Synced Sep 30, 2026, 2:09 AM EDT
Recruiting No phase listed Observational

Body Composition Outcomes in MS Patients

NCT07530718
View directory record Official record
Conditions
Obesity
Interventions
Not listed
Lead sponsor
Pennington Biomedical Research Center
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
2
States / cities
Baton Rouge, Louisiana
Source: ClinicalTrials.gov public record
Updated Jun 17, 2026 · Synced Sep 30, 2026, 2:09 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 24, 2025 · Synced Sep 30, 2026, 2:09 AM EDT
Completed Not applicable Interventional

Comparative Effectiveness of Metabolic and Bariatric Surgery With PROMs

NCT02749305
View directory record Official record
Conditions
Bariatric Surgery, Metabolic Surgery, Weight Reduction
Interventions
Collection of patient-reported outcome measures
Other
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
0 Years and older
Enrollment
11,146 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2024
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 20, 2025 · Synced Sep 30, 2026, 2:09 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Effects of Bariatric Surgery on Insulin

NCT00535600
View directory record Official record
Conditions
Obesity, Bariatric Surgery, Gastric Bypass, Weight Loss, Hyperglycemia
Interventions
Not listed
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
18 Years to 96 Years
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2014
U.S. locations
1
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated Dec 17, 2019 · Synced Sep 30, 2026, 2:09 AM EDT
Completed Not applicable Interventional

Iron Supplement to Improve Iron Status Following Bariatric Surgery

NCT02404012
View directory record Official record
Conditions
Anemia, Iron Deficiency
Interventions
Oral iron supplementation
Dietary Supplement
Lead sponsor
Indiana University
Other
Eligibility
18 Years to 65 Years · Female only
Enrollment
64 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2021
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated Aug 5, 2022 · Synced Sep 30, 2026, 2:09 AM EDT
Not listed Not applicable Interventional

Nutritional Stimulation of Muscle Protein Synthesis and Metabolic Rate After Bariatric Surgery

NCT04751916
View directory record Official record
Conditions
Weight Loss
Interventions
Essential Amino Acid Protein Supplement, Beneprotein®
Dietary Supplement
Lead sponsor
Oregon Health and Science University
Other
Eligibility
18 Years to 60 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Apr 4, 2023 · Synced Sep 30, 2026, 2:09 AM EDT
Completed No phase listed Observational

Prophylactic Use of Enoxaparin in Morbidly Obese Adolescents During Bariatric Surgery

NCT01587781
View directory record Official record
Conditions
Obesity
Interventions
Not listed
Lead sponsor
Janelle Vaughns
Other
Eligibility
12 Years to 20 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2021
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Mar 17, 2022 · Synced Sep 30, 2026, 2:09 AM EDT
Completed Phase 4 Interventional Results available

Surgical Conditions During Laparoscopic Bariatric Surgery

NCT02703909
View directory record Official record
Conditions
Morbid Obesity
Interventions
Rocuronium, Insufflation pressure
Drug · Device
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
18 Years and older
Enrollment
144 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated Jun 21, 2018 · Synced Sep 30, 2026, 2:09 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Change in Reward System Activation and Gut Microbiota Following RYGB and Sleeve Gastrectomy for Weight Loss vs. Control-Heads Up Ancillary

NCT02735564
View directory record Official record
Conditions
Bariatric Surgery Candidate
Interventions
Bariatric Surgery
Procedure
Lead sponsor
Pennington Biomedical Research Center
Other
Eligibility
21 Years to 70 Years
Enrollment
6 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
1
States / cities
Baton Rouge, Louisiana
Source: ClinicalTrials.gov public record
Updated Jan 6, 2020 · Synced Sep 30, 2026, 2:09 AM EDT
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 27, 2019 · Synced Sep 30, 2026, 2:09 AM EDT
Enrolling by invitation No phase listed Observational Accepts healthy volunteers

Dietary Sugar Absorptive Phenotype for Prediction of Weight Loss Outcome

NCT05408728
View directory record Official record
Conditions
Obese, Healthy, Bariatric Surgery Candidate
Interventions
Endoscopic biopsy
Procedure
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
52 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2026
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Sep 10, 2025 · Synced Sep 30, 2026, 2:09 AM EDT
Completed No phase listed Observational

Gastric Bypass After Previous Anti-reflux Surgery

NCT01041105
View directory record Official record
Conditions
Clinically Severe Obesity, Gastroesophageal Reflux Disease
Interventions
Not listed
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years to 60 Years
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
1
States / cities
Fresno, California
Source: ClinicalTrials.gov public record
Updated Jan 1, 2010 · Synced Sep 30, 2026, 2:09 AM EDT
Terminated Not applicable Interventional

Vitamin D to Improve Nutrition Prior to Bariatric Surgery and Investigate the Relationship With Negative Outcomes

NCT02212652
View directory record Official record
Conditions
Vitamin D Deficiency, Vitamin D Insufficiency
Interventions
Vitamin D, Placebo, Standard of Care
Dietary Supplement · Other
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 64 Years
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jun 6, 2019 · Synced Sep 30, 2026, 2:09 AM EDT
Completed Not applicable Interventional Results available

Effect of Exercise and Surgical Weight Loss on Polyneuropathy

NCT03617185
View directory record Official record
Conditions
Polyneuropathies, Obesity, Bariatric Surgery Candidate
Interventions
High Intensity Interval Training (HIIT), Routine Exercise, Bariatric surgery
Other · Procedure
Lead sponsor
University of Michigan
Other
Eligibility
40 Years and older
Enrollment
140 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2024
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Sep 17, 2026 · Synced Sep 30, 2026, 2:09 AM EDT
Completed No phase listed Observational

Extracellular Vesicle Cargo in Obesity and Type 2 Diabetes

NCT06401876
View directory record Official record
Conditions
Glucose Intolerance, Insulin Resistance, Diabetes
Interventions
Not listed
Lead sponsor
Mayo Clinic
Other
Eligibility
21 Years and older
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Aug 20, 2025 · Synced Sep 30, 2026, 2:09 AM EDT
Recruiting No phase listed Observational

Endoscopic Bariatric Therapies (EBTs): A Retrospective and Prospective Multicenter Registry

NCT04494048
View directory record Official record
Conditions
Obesity, Weight Loss, Gastro Esophageal Reflux, Bariatric Surgery Candidate
Interventions
Endoscopic Bariatric Therapies
Other
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
18 Years to 89 Years
Enrollment
9,999 participants
Timeline
2016 – 2035
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 23, 2026 · Synced Sep 30, 2026, 2:09 AM EDT
Terminated No phase listed Observational

Obesity and Weight Loss on Reproductive Function

NCT00143078
View directory record Official record
Conditions
Obesity
Interventions
Not listed
Lead sponsor
Milton S. Hershey Medical Center
Other
Eligibility
18 Years to 40 Years
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2009
U.S. locations
1
States / cities
Hershey, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Nov 16, 2015 · Synced Sep 30, 2026, 2:09 AM EDT
Completed No phase listed Observational

WeighT LOSS Surgery and Comprehensive Cardiometabolic Responses to to EXercise

NCT06576050
View directory record Official record
Conditions
Heart Failure, Obesity, Weight Loss, Heart Failure With Preserved Ejection Fraction
Interventions
Not listed
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
40 Years and older
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 13, 2026 · Synced Sep 30, 2026, 2:09 AM EDT