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ClinicalTrials.gov public records Last synced Oct 4, 2026, 2:14 AM EDT

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Showing 25–48 of 565 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Weight loss surgery Clear all
Withdrawn No phase listed Observational

Effect of Lap-Band Induced Weight Loss on Serum PSA Levels

NCT00562341
View directory record Official record
Conditions
Obesity, Prostate Cancer
Interventions
Bariatric Surgery
Other
Lead sponsor
Maimonides Medical Center
Other
Eligibility
20 Years to 60 Years · Male only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
1
States / cities
Brooklyn, New York
Source: ClinicalTrials.gov public record
Updated Aug 23, 2018 · Synced Oct 4, 2026, 2:14 AM EDT
Withdrawn Not applicable Interventional

Sleeve Gastrectomy Versus Gastric Bypass for Private Pay Patients Seeking Obesity Surgery

NCT01063959
View directory record Official record
Conditions
Morbid Obesity
Interventions
Laparoscopic Sleeve Gastrectomy, Laparoscopic Gastric Bypass
Procedure
Lead sponsor
Pennington Biomedical Research Center
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
1
States / cities
Baton Rouge, Louisiana
Source: ClinicalTrials.gov public record
Updated Dec 18, 2015 · Synced Oct 4, 2026, 2:14 AM EDT
Terminated Not applicable Interventional Results available

Intravenous Acetaminophen Use With Bariatric Surgery on Morbidly Obese Patients

NCT01527942
View directory record Official record
Conditions
Obesity, Pain
Interventions
Acetaminophen, Placebo
Drug
Lead sponsor
Trinity Health Of New England
Other
Eligibility
20 Years to 70 Years
Enrollment
34 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
1
States / cities
Hartford, Connecticut
Source: ClinicalTrials.gov public record
Updated Dec 17, 2015 · Synced Oct 4, 2026, 2:14 AM EDT
Completed Not applicable Interventional

Probiotic Supplementation on Weight Loss

NCT03832439
View directory record Official record
Conditions
Bariatric Surgery Candidate
Interventions
Probiotic, microcrystalline cellulose
Dietary Supplement
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 65 Years
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Feb 21, 2022 · Synced Oct 4, 2026, 2:14 AM EDT
Completed Not applicable Interventional Results available

Assessment of Gastric Volume Reduction in Surgical Weight Loss Candidates

NCT00721227
View directory record Official record
Conditions
Obesity
Interventions
Reduction Gastroplasty
Procedure
Lead sponsor
Ethicon Endo-Surgery
Industry
Eligibility
21 Years to 60 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Sep 8, 2010 · Synced Oct 4, 2026, 2:14 AM EDT
Completed Phase 2 Interventional Results available

Efficacy, Tolerability and Pharmacokinetics of Subcutaneous Exendin (9-39) in Patients With Post Bariatric Hypoglycemia

NCT02771574
View directory record Official record
Conditions
Post Bariatric Hypoglycemia
Interventions
Lyo avexitide, Liq avexitide
Drug
Lead sponsor
Tracey McLaughlin
Other
Eligibility
18 Years to 70 Years
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Nov 13, 2020 · Synced Oct 4, 2026, 2:14 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Preoperative Weight Loss for Open Abdominal Wall Reconstruction

NCT05925959
View directory record Official record
Conditions
Abdominal Wall Hernia
Interventions
Preoperative Weight Management Program
Other
Lead sponsor
Benjamin T. Miller
Other
Eligibility
18 Years and older
Enrollment
258 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
2
States / cities
Chicago, Illinois • Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Mar 23, 2026 · Synced Oct 4, 2026, 2:14 AM EDT
Completed No phase listed Observational

Impact of Monthly High Dose Oral Cholecalciferol on Serum 25 Hydroxy Vitamin D Levels in Bariatric Surgery Subjects

NCT01871389
View directory record Official record
Conditions
Bariatric Surgery
Interventions
Not listed
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 May 9, 2014 · Synced Oct 4, 2026, 2:14 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Resting Metabolic Rate Testing in Bariatric Surgery Patients

NCT03221543
View directory record Official record
Conditions
Weight Loss, Bariatric Surgery Candidate
Interventions
ReeVue Indirect Calorimeter
Device
Lead sponsor
Baylor Research Institute
Other
Eligibility
18 Years and older
Enrollment
84 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2023
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Jan 26, 2026 · Synced Oct 4, 2026, 2:14 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Low-level Laser and Lifestyle Modifications

NCT05083442
View directory record Official record
Conditions
Overweight and Obesity, Weight Loss
Interventions
Low Level Laser Therapy, Sham (placebo)
Device · Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Apr 3, 2025 · Synced Oct 4, 2026, 2:14 AM EDT
Completed No phase listed Observational

Physical Fitness and Nutrition Intake in Bariatric Surgery Population

NCT02070354
View directory record Official record
Conditions
Obesity
Interventions
Not listed
Lead sponsor
Geisinger Clinic
Other
Eligibility
18 Years to 70 Years
Enrollment
73 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2009
U.S. locations
1
States / cities
Danville, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 12, 2016 · Synced Oct 4, 2026, 2:14 AM EDT
Not listed Phase 1 Interventional Accepts healthy volunteers

Human Biomarkers for Assessing Copper Deficiency

NCT01177579
View directory record Official record
Conditions
Copper Deficiency
Interventions
Copper gluconate
Dietary Supplement
Lead sponsor
Purdue University
Other
Eligibility
18 Years to 65 Years
Enrollment
70 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2018
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated Apr 19, 2017 · Synced Oct 4, 2026, 2:14 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Pre-op Use of Incentive Spirometry in Obese Patients

NCT01004146
View directory record Official record
Conditions
Lung Function, Bariatric Surgery
Interventions
Incentive Spirometry
Procedure
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
18 Years to 80 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Feb 3, 2014 · Synced Oct 4, 2026, 2:14 AM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

The WISE (Weightloss Intervention Surgical Effects) Brain Study

NCT02137070
View directory record Official record
Conditions
Diabetes, Weightloss
Interventions
Bariatric Surgery Candidates, Non surgical/Community volunteers
Procedure · Other
Lead sponsor
University of Florida
Other
Eligibility
20 Years to 75 Years
Enrollment
197 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2022
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Dec 5, 2024 · Synced Oct 4, 2026, 2:14 AM EDT
Completed Phase 1 Interventional Results available

Transversus Abdominis Plane (TAP) Block Using Liposomal Bupivacaine in Metabolic and Bariatric Surgery Patients

NCT05537883
View directory record Official record
Conditions
Morbid Obesity, Bariatric Surgery Candidate
Interventions
Liposomal bupivacaine, Bupivacaine Injection
Drug
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years and older
Enrollment
72 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 11, 2025 · Synced Oct 4, 2026, 2:14 AM EDT
Terminated No phase listed Observational

Factors Involved in Obesity-related Inflammation and Insulin Resistance

NCT01173705
View directory record Official record
Conditions
Obesity, Insulin Resistance, Inflammation
Interventions
Not listed
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years to 65 Years
Enrollment
62 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jan 20, 2017 · Synced Oct 4, 2026, 2:14 AM EDT
Completed Phase 1Phase 2 Interventional

Impact of Metabolic Surgery on Pancreatic, Renal and Cardiovascular Health in Youth With Type 2 Diabetes

NCT03620773
View directory record Official record
Conditions
Type 2 Diabetes Mellitus, Obesity, Bariatric Surgery Candidate, Nephropathy, Diabetic Kidney Disease, Diabetes Mellitus, Type 2, Diabetes Mellitus, Diabetes Complications, Weight Loss, Diabetic Nephropathies, Adolescent Obesity, Pediatric Obesity
Interventions
Aminohippurate Sodium Inj 20%, Iohexol Inj 300 mg/mL, Vertical Sleeve Gastrectomy, Renal Biopsy
Drug · Procedure
Lead sponsor
University of Colorado, Denver
Other
Eligibility
12 Years to 21 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2024
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Jan 12, 2026 · Synced Oct 4, 2026, 2:14 AM EDT
Completed Not applicable Interventional

Safety, Tolerability, and Sustained Weight Loss of Endoscopic Sleeve Gastroplasty With Diet Modification and Exercise

NCT03206905
View directory record Official record
Conditions
Obesity
Interventions
Endoscopic Sleeve Gastroplasty, Diet and Exercise
Procedure · Behavioral
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
18 Years to 65 Years
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 15, 2022 · Synced Oct 4, 2026, 2:14 AM EDT
Completed Phase 2 Interventional Results available

Multi-Center Pre-Bariatric Weight Loss Study

NCT00469391
View directory record Official record
Conditions
Obesity
Interventions
GI Sleeve Implantable weight loss device (EndoBarrier), Sham Procedure
Device · Procedure
Lead sponsor
Morphic Medical Inc.
Industry
Eligibility
18 Years to 55 Years
Enrollment
56 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
4
States / cities
Weston, Florida • Burlington, Massachusetts • Lebanon, New Hampshire + 1 more
Source: ClinicalTrials.gov public record
Updated Feb 15, 2017 · Synced Oct 4, 2026, 2:14 AM EDT
Completed No phase listed Observational Results available

Hepatic Mitochondrial Function in Youth

NCT03587727
View directory record Official record
Conditions
Hepatic Steatosis, Bariatric Surgery Candidate, Adolescent Obesity, Obesity
Interventions
Not listed
Lead sponsor
University of Colorado, Denver
Other
Eligibility
13 Years to 20 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2023
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Oct 10, 2025 · Synced Oct 4, 2026, 2:14 AM EDT
Completed No phase listed Observational

Pilot Study of the Effect of Weight Loss on Breast Tissue and Blood Biomarkers in Women at Increased Risk for Breast Cancer

NCT02681120
View directory record Official record
Conditions
Breast Neoplasms, Obesity
Interventions
Biopsy, Blood draw, Mammogram, MRI
Procedure
Lead sponsor
Tarah J Ballinger, MD
Other
Eligibility
18 Years to 75 Years · Female only
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
3
States / cities
Carmel, Indiana • Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Oct 14, 2021 · Synced Oct 4, 2026, 2:14 AM 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 4, 2011 · Synced Oct 4, 2026, 2:14 AM EDT
Not yet recruiting Not applicable Interventional

Pilot Study of Endoscopic Sleeve Gastroplasty for Obese Patients With Heart Failure and Preserved Ejection Fraction

NCT07798219
View directory record Official record
Conditions
Obesity (BMI>30), Heart Failure With Preserved Ejection Fraction (HFPEF)
Interventions
Endoscopic sleeve gastroplasty (ESG)
Procedure
Lead sponsor
Cedars-Sinai Medical Center
Other
Eligibility
22 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Sep 1, 2026 · Synced Oct 4, 2026, 2:14 AM EDT
Completed Not applicable Interventional

Preventing Diabetes

NCT05395377
View directory record Official record
Conditions
PreDiabetes
Interventions
Registered Dietitian/Nutritionist, Diabetes Prevention Program, Weight Watchers, Reimagined, DPP or RDN Counseling + Medication, Bariatric Surgery Evaluation
Behavioral · Other
Lead sponsor
Geisinger Clinic
Other
Eligibility
18 Years to 89 Years
Enrollment
84 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2021
U.S. locations
1
States / cities
Danville, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 27, 2022 · Synced Oct 4, 2026, 2:14 AM EDT