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ClinicalTrials.gov public records Last synced Sep 5, 2026, 5:42 PM EDT

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Showing 1–24 of 525 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Bariatric surgery. 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Withdrawn No phase listed Observational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 5, 2026, 5:42 PM EDT
Enrolling by invitation No phase listed Observational

Abundance and Distribution of Lipids and Proteins in Nonalcoholic Fatty Liver Disease (NAFLD)

NCT00983463
View directory record Official record
Conditions
Nonalcoholic Fatty Liver Disease
Interventions
Not listed
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years to 65 Years · Female only
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2026
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Dec 17, 2025 · Synced Sep 5, 2026, 5:42 PM EDT
Withdrawn No phase listed Observational

Intraop Ventilation Management and Postop Pulmonary Complications in High Risk Patients for OSA

NCT03135691
View directory record Official record
Conditions
Ventilator-Induced Lung Injury
Interventions
Not listed
Lead sponsor
Ohio State University
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2025
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Mar 26, 2025 · Synced Sep 5, 2026, 5:42 PM EDT
Not yet recruiting Not applicable Interventional

Gastric Ultrasound in Patients Who Have Undergone Bariatric Surgery

NCT07310875
View directory record Official record
Conditions
Obesity, Weight Loss, Gastrectomy
Interventions
Gastric Point of Care Ultrasound
Procedure
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
18 Years to 85 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Dec 29, 2025 · Synced Sep 5, 2026, 5:42 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 5, 2026, 5:42 PM 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 Sep 5, 2026, 5:42 PM EDT
Active, not recruiting No phase listed Observational

Weight Loss Management in Endometrial Cancer Survivors

NCT06877572
View directory record Official record
Conditions
Endometrial Cancer Survivors, Weight Management, Early Stage Endometrial Cancer
Interventions
Weight loss with pharmacotherapy, Weight loss without pharmacotherapy
Behavioral
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
18 Years and older · Female only
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2030
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Aug 11, 2026 · Synced Sep 5, 2026, 5:42 PM EDT
Completed No phase listed Observational

Post-Market Clinical Follow-Up of STRATAFIX™ Spiral PDS™ PLUS

NCT03937011
View directory record Official record
Conditions
Bariatric - Sleeve Gastrectomy Staple Line Reinforcement, Gynecology - Vaginal Cuff Closure
Interventions
Robotic Suturing of gastric sleeve oversew and vaginal cuff closure
Device
Lead sponsor
Ethicon, Inc.
Industry
Eligibility
18 Years and older
Enrollment
161 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
4
States / cities
Miami, Florida • Albany, New York • New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 16, 2026 · Synced Sep 5, 2026, 5:42 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 5, 2026, 5:42 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Pulmonary Inflammation and Microbiome Changes With Bariatric Surgery in Obese Asthma

NCT04247971
View directory record Official record
Conditions
Asthma, Obesity
Interventions
Blood draw, Sputum collection, Pulmonary function test
Procedure
Lead sponsor
Duke University
Other
Eligibility
21 Years to 60 Years
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 15, 2023 · Synced Sep 5, 2026, 5:42 PM EDT
Terminated Early Phase 1 Interventional Accepts healthy volunteers

Surgical Weight Loss and Alcohol Perception

NCT04299373
View directory record Official record
Conditions
Bariatric Surgery Candidate
Interventions
Alcohol: Oral administration, Alcohol: Intravenous administration
Drug
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
30 Years to 55 Years · Female only
Enrollment
3 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated Feb 1, 2024 · Synced Sep 5, 2026, 5:42 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Trial Of Paricalcitol and Cholecalciferol(Vitamin D3) in the Treatment Of Secondary Hyperparathyroidism in Patients After ROUX-EN-Y Gastric Bypass Surgery

NCT01138475
View directory record Official record
Conditions
Gastric Bypass, Parathyroid Hormone
Interventions
Paricalcitol, Cholecalciferol, Placebo
Drug
Lead sponsor
Kerstyn C. Zalesin, M.D.
Other
Eligibility
18 Years to 100 Years
Enrollment
49 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2015
U.S. locations
1
States / cities
Royal Oak, Michigan
Source: ClinicalTrials.gov public record
Updated Mar 21, 2017 · Synced Sep 5, 2026, 5:42 PM EDT
Completed No phase listed Observational

The Collateral Impact of Bariatric Surgery on Families

NCT02021630
View directory record Official record
Conditions
Obesity, Bariatric Surgery Candidate, Weight Loss
Interventions
Outcomes
Other
Lead sponsor
Geisinger Clinic
Other
Eligibility
18 Years and older
Enrollment
97 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
1
States / cities
Danville, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 20, 2016 · Synced Sep 5, 2026, 5:42 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

The Effects of Bariatric Surgery Weight Loss on Knee Pain in Patients With Osteoarthritis of the Knee

NCT00752765
View directory record Official record
Conditions
Knee Pain, Knee Osteoarthritis
Interventions
Not listed
Lead sponsor
Penn State University
Other
Eligibility
18 Years to 70 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2010
U.S. locations
1
States / cities
Hershey, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 2, 2015 · Synced Sep 5, 2026, 5:42 PM EDT
Completed Phase 2 Interventional Results available

Study to Evaluate ARD-101 in Adults Receiving Bariatric Surgery

NCT05215847
View directory record Official record
Conditions
Bariatric Surgery, Obesity, Weight Gain
Interventions
ARD-101
Drug
Lead sponsor
Aardvark Therapeutics, Inc.
Industry
Eligibility
18 Years to 75 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Feb 10, 2025 · Synced Sep 5, 2026, 5:42 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Teen-Longitudinal Assessment of Bariatric Surgery (Teen-LABS) Adolescent Bariatrics: Assessing Health Benefits and Risk

NCT00474318
View directory record Official record
Conditions
Obesity
Interventions
Not listed
Lead sponsor
Ann & Robert H Lurie Children's Hospital of Chicago
Other
Eligibility
12 Years to 19 Years
Enrollment
250 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2024
U.S. locations
3
States / cities
Chicago, Illinois • Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Nov 6, 2024 · Synced Sep 5, 2026, 5:42 PM EDT
Completed No phase listed Observational

Bariatric Surgery-Induced Shift in Gut Microbiome and NAFLD

NCT04263376
View directory record Official record
Conditions
Obesity, Diabetes Mellitus, Type 2, NAFLD
Interventions
Not listed
Lead sponsor
The Cleveland Clinic
Other
Eligibility
18 Years to 70 Years
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Jan 4, 2023 · Synced Sep 5, 2026, 5:42 PM EDT
Completed Phase 2Phase 3 Interventional

Efficacy of a Novel Multivitamin-Mineral Supplement in Preventing Vitamin Deficiency in Postoperative Bariatric Patients

NCT01475617
View directory record Official record
Conditions
Bariatric Surgery Candidate
Interventions
AquaVanta Chewable Tablet, Flinstones Complete, Nature Made Calcium Softgels, Twin Labs Iron Caps, Rexall Vitamin B12 Tablet
Dietary Supplement
Lead sponsor
Yasoo Health
Industry
Eligibility
18 Years to 65 Years
Enrollment
61 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 21, 2015 · Synced Sep 5, 2026, 5:42 PM EDT
Not listed Not applicable Interventional

Laparoscopic Gastric Bypass for Type 2 Diabetes Mellitus With Body Mass Index (BMI) < 35

NCT00999050
View directory record Official record
Conditions
Diabetes Mellitus, Type 2
Interventions
Gastric bypass for diabetic patients <35 BMI
Procedure
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
18 Years to 65 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2013
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 3, 2011 · Synced Sep 5, 2026, 5:42 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 5, 2026, 5:42 PM EDT
Recruiting Not applicable Interventional

Stanford Pediatric Healthy Weight Index

NCT07316816
View directory record Official record
Conditions
Obesity & Overweight
Interventions
Remote Monitoring Program
Other
Lead sponsor
Stanford University
Other
Eligibility
10 Years to 18 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated Jan 4, 2026 · Synced Sep 5, 2026, 5:42 PM EDT
Terminated Phase 1 Interventional Accepts healthy volunteers

Role of GLP-1 in Hyperinsulinemic Hypoglycemia Post-bariatric Surgery

NCT02550145
View directory record Official record
Conditions
Hypoglycemia
Interventions
Exendin (9-39), Placebo
Drug · Other
Lead sponsor
Tracey McLaughlin
Other
Eligibility
18 Years to 65 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2014
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Dec 3, 2024 · Synced Sep 5, 2026, 5:42 PM EDT
Completed No phase listed Observational

Microbes and Bariatric Surgery

NCT01130207
View directory record Official record
Conditions
Obesity, Diabetes, Periodontal Disease
Interventions
Not listed
Lead sponsor
State University of New York - Upstate Medical University
Other
Eligibility
18 Years to 65 Years
Enrollment
34 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
1
States / cities
Syracuse, New York
Source: ClinicalTrials.gov public record
Updated Nov 18, 2014 · Synced Sep 5, 2026, 5:42 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 5, 2026, 5:42 PM EDT