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Showing 1–24 of 87 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Bariatric Surgery Evaluation Clear all
Active, not recruiting Not applicable Interventional Accepts healthy volunteers Results available

Positive Psychology Intervention for Patients Post-bariatric Surgery and Their Partners

NCT05958615
View directory record Official record
Conditions
Obesity, Morbid
Interventions
Reimagining Us in the Context of Bariatric Surgery (ReConnect)
Behavioral
Lead sponsor
Larissa McGarrity, Ph.D.
Other
Eligibility
18 Years and older
Enrollment
82 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Jun 7, 2026 · Synced Sep 1, 2026, 10:24 PM EDT
Completed No phase listed Observational

Assessment of Changes in Abdominal Fat

NCT00228579
View directory record Official record
Conditions
Obesity
Interventions
Not listed
Lead sponsor
Indiana University
Other
Eligibility
18 Years to 65 Years · Female only
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2020
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated Aug 4, 2022 · Synced Sep 1, 2026, 10:24 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Investigating the Link Between Type 2 Immunity and NAFLD in Human Obesity

NCT04232566
View directory record Official record
Conditions
Obesity, Morbid, NASH - Nonalcoholic Steatohepatitis, Chronic Inflammation
Interventions
Bariatric surgery
Procedure
Lead sponsor
Mayo Clinic
Other
Eligibility
30 Years to 70 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2027
U.S. locations
1
States / cities
Scottsdale, Arizona
Source: ClinicalTrials.gov public record
Updated Jan 27, 2026 · Synced Sep 1, 2026, 10:24 PM EDT
Recruiting No phase listed Observational

Autonomic Dysfunction in Patients Following Bariatric Surgery: The ADiPOSE Study

NCT06289413
View directory record Official record
Conditions
Autonomic Dysfunction, Orthostatic Intolerance
Interventions
Development of AD/OI after BS
Other
Lead sponsor
Kansas City Heart Rhythm Research Foundation
Other
Eligibility
18 Years to 85 Years
Enrollment
400 participants
Timeline
2024 – 2025
U.S. locations
8
States / cities
Overland Park, Kansas • Independence, Missouri • Kansas City, Missouri
Source: ClinicalTrials.gov public record
Updated Aug 27, 2025 · Synced Sep 1, 2026, 10:24 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Outcomes After Weight Loss Surgery in Low-Risk Patients

NCT05699083
View directory record Official record
Conditions
Weight Loss, Bariatric Surgery
Interventions
Body Image/Self-Esteem Questionnaires
Other
Lead sponsor
Dr. Feiz & Associates
Other
Eligibility
Not listed
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2026
U.S. locations
1
States / cities
Beverly Hills, California
Source: ClinicalTrials.gov public record
Updated Jan 25, 2023 · Synced Sep 1, 2026, 10:24 PM EDT
Completed No phase listed Observational

Assessment of Outcomes Following Bariatric Surgery for Mississippi State Employees

NCT01162668
View directory record Official record
Conditions
Obesity
Interventions
Not listed
Lead sponsor
University of Mississippi Medical Center
Other
Eligibility
18 Years and older
Enrollment
165 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
4
States / cities
Jackson, Mississippi • Oxford, Mississippi • Pascagoula, Mississippi
Source: ClinicalTrials.gov public record
Updated May 14, 2018 · Synced Sep 1, 2026, 10:24 PM EDT
Completed No phase listed Observational Results available

Laparoscopic Versus Transabdominal Ultrasound in Morbidly Obese Patients

NCT00971750
View directory record Official record
Conditions
Cholelithiasis, Ultrasonography, Laparoscopic Gastric Bypass
Interventions
Not listed
Lead sponsor
Gundersen Lutheran Medical Foundation
Other
Eligibility
18 Years and older
Enrollment
253 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2011
U.S. locations
1
States / cities
La Crosse, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jul 10, 2012 · Synced Sep 1, 2026, 10:24 PM 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 Sep 1, 2026, 10:24 PM EDT
Completed No phase listed Observational

Ecological Momentary Assessment of Behavioral and Psychosocial Predictors of Weight Loss Following Bariatric Surgery

NCT02777177
View directory record Official record
Conditions
Obesity
Interventions
Not listed
Lead sponsor
The Miriam Hospital
Other
Eligibility
21 Years to 70 Years
Enrollment
92 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
2
States / cities
Boston, Massachusetts • Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Jun 12, 2022 · Synced Sep 1, 2026, 10:24 PM EDT
Completed Not applicable Interventional Results available

LAGB as a Treatment for Morbid Obesity in Adolescents

NCT01045499
View directory record Official record
Conditions
Morbid Obesity, Obstructive Sleep Apnea Syndrome, Metabolic Syndrome, Insulin Resistance, Nonalcoholic Fatty Liver Disease
Interventions
Laparoscopic adjustable gastric banding (Allergan Lap Band)
Device
Lead sponsor
Jeffrey L Zitsman, MD
Other
Eligibility
13 Years to 19 Years
Enrollment
137 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2017
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 12, 2020 · Synced Sep 1, 2026, 10:24 PM EDT
Completed Not applicable Interventional

Pilot Study of Laparoscopic Gastric Plication in Adolescents With Severe Obesity

NCT01980758
View directory record Official record
Conditions
Obesity
Interventions
Laparoscopic Gastric Plication
Procedure
Lead sponsor
Virginia Commonwealth University
Other
Eligibility
14 Years to 19 Years
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2018
U.S. locations
1
States / cities
Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Jul 9, 2018 · Synced Sep 1, 2026, 10:24 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 1, 2026, 10:24 PM EDT
Withdrawn No phase listed Observational

Adjustable Gastric Band Survey Study

NCT01041534
View directory record Official record
Conditions
Morbid Obesity
Interventions
Survey
Other
Lead sponsor
University of Washington
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Dec 12, 2022 · Synced Sep 1, 2026, 10:24 PM EDT
Withdrawn Not applicable Interventional

Exercise Training Study Before Bariatric Surgery

NCT06274606
View directory record Official record
Conditions
Bariatric Surgery Candidate
Interventions
Exercise Group
Other
Lead sponsor
University of Virginia
Other
Eligibility
18 Years to 50 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Jun 13, 2024 · Synced Sep 1, 2026, 10:24 PM EDT
Completed Phase 4 Interventional Results available

Nicotine Administration and Post-operative Opioid Use With Bariatric Surgery

NCT01194089
View directory record Official record
Conditions
Pain, Postoperative
Interventions
Nasal Nicotine Spray, Nasal Normal Saline Spray
Drug
Lead sponsor
Toby Weingarten
Other
Eligibility
18 Years to 60 Years · Female only
Enrollment
95 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jul 8, 2015 · Synced Sep 1, 2026, 10:24 PM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

Bariatric Embolization of Arteries for the Treatment of Nonalcoholic Steatohepatitis

NCT02933554
View directory record Official record
Conditions
Obesity, Weight Loss, Body Weight, Nonalcoholic Steatohepatitis, Nonalcoholic Fatty Liver Disease, NAFLD
Interventions
Embospheres Microspheres
Device
Lead sponsor
Keith Pereira, MD:
Other
Eligibility
22 Years to 65 Years
Enrollment
8 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jul 27, 2025 · Synced Sep 1, 2026, 10:24 PM EDT
Terminated No phase listed Observational Accepts healthy volunteers

Alcohol and Bariatric Surgery

NCT02766322
View directory record Official record
Conditions
Obesity
Interventions
Oral Alcohol challenge test Alcohol visit first, Oral Alcohol challenge test Placebo visit first, Intravenous Alcohol Challenge Test (Clamp), Intravenous Alcohol Self-administration Test
Other
Lead sponsor
University of Illinois at Urbana-Champaign
Other
Eligibility
21 Years to 64 Years · Female only
Enrollment
54 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2022
U.S. locations
1
States / cities
Urbana, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 10, 2025 · Synced Sep 1, 2026, 10:24 PM EDT
Not listed Not applicable Interventional

Bariatric Surgery Study

NCT03766360
View directory record Official record
Conditions
Depression, Quality of Life, Interpersonal Relations
Interventions
Functional Analytical Psychotherapy (FAP)
Behavioral
Lead sponsor
University of Washington
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Dec 5, 2018 · Synced Sep 1, 2026, 10:24 PM EDT
Recruiting Not applicable Interventional

Gut Microbiome and Sex as Risk Factors for Kidney Stones After Bariatric Surgery

NCT04590690
View directory record Official record
Conditions
Bariatric Surgery Candidate
Interventions
Special diet
Other
Lead sponsor
University of Chicago
Other
Eligibility
18 Years to 130 Years
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2027
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated May 10, 2026 · Synced Sep 1, 2026, 10:24 PM 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 16, 2026 · Synced Sep 1, 2026, 10:24 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Mechanisms Defending Fat Mass in Humans After Lipectomy

NCT00993213
View directory record Official record
Conditions
Disproportionate Shape, Expanded Fat Pads
Interventions
Standard of Care with Liposuction, Standard of Care without Liposuction
Procedure · Other
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2008
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Dec 5, 2016 · Synced Sep 1, 2026, 10:24 PM EDT
Terminated Not applicable Interventional

Bariatric Atrial Restoration of Sinus Rhythm

NCT04050969
View directory record Official record
Conditions
Atrial Fibrillation, Morbid Obesity
Interventions
Bariatric surgery, Atrial Fibrillation (AF) Catheter Ablation
Procedure
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 70 Years
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Oct 18, 2022 · Synced Sep 1, 2026, 10:24 PM EDT
Completed No phase listed Observational

Prospective Robotic-assisted Revisional Bariatric Study

NCT04506190
View directory record Official record
Conditions
Bariatric Surgery Candidate
Interventions
Revisional bariatric surgery
Procedure
Lead sponsor
Intuitive Surgical
Industry
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
1
States / cities
Orlando, Florida
Source: ClinicalTrials.gov public record
Updated Apr 12, 2025 · Synced Sep 1, 2026, 10:24 PM EDT
Completed Not applicable Interventional

Metabolic Surgery Versus Medical Management for Resolution of Type II Diabetes

NCT01044602
View directory record Official record
Conditions
Obesity, Type 2 Diabetes Mellitus
Interventions
Laboratory evaluations, sleep study, Best Medical Management, Roux-en-Y gastric bypass surgery
Other · Procedure
Lead sponsor
David Bradley MD
Other
Eligibility
25 Years to 70 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Apr 20, 2015 · Synced Sep 1, 2026, 10:24 PM EDT