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Showing 1–24 of 437 matching trials from the live ClinicalTrials.gov search.
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Filters: "bariatric" Condition: Obesity Clear all
Completed No phase listed Observational

The Effect of Obesity on Lung Functioning

NCT00284895
View directory record Official record
Conditions
Obesity, Asthma
Interventions
Not listed
Lead sponsor
National Jewish Health
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
1
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated Mar 28, 2017 · Synced Jul 24, 2026, 2:50 AM EDT
Active, not recruiting Not applicable Interventional

Weight Loss Clinical Decision Support

NCT05198765
View directory record Official record
Conditions
Diabetes Mellitus, Type 2, Obesity
Interventions
BMI-CDS
Behavioral
Lead sponsor
HealthPartners Institute
Other
Eligibility
18 Years to 75 Years
Enrollment
10,120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Nov 9, 2025 · Synced Jul 24, 2026, 2:50 AM EDT
Terminated Phase 4 Interventional Results available

CARAT: Canagliflozin vs. Placebo for Post Bariatric Patients With Persistent Type 2 Diabetes

NCT02912455
View directory record Official record
Conditions
Diabetes Mellitus, Type 2, Obesity
Interventions
canagliflozin, Placebo (for canagliflozin)
Drug
Lead sponsor
The Cleveland Clinic
Other
Eligibility
20 Years to 75 Years
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Nov 19, 2020 · Synced Jul 24, 2026, 2:50 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Impact of Bariatric Surgery on Adipocyte Metabolism

NCT04242524
View directory record Official record
Conditions
Metabolic Syndrome, Obesity
Interventions
Circadian Clock Alignment, Circadian Clock Control
Behavioral
Lead sponsor
University of Chicago
Other
Eligibility
18 Years to 55 Years · Female only
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2025
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Feb 12, 2026 · Synced Jul 24, 2026, 2:50 AM EDT
Not listed Not applicable Interventional

Can Transcranial Magnetic Stimulation Decrease Food Reinforcement

NCT05522803
View directory record Official record
Conditions
Obesity
Interventions
TMS followed by sham TMS, Sham TMS followed by TMS
Device
Lead sponsor
Hartford Hospital
Other
Eligibility
18 Years to 60 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Hartford, Connecticut
Source: ClinicalTrials.gov public record
Updated Feb 27, 2024 · Synced Jul 24, 2026, 2:50 AM EDT
Completed No phase listed Observational

Bone Metabolism After Bariatric Surgery

NCT01824797
View directory record Official record
Conditions
Obesity, Osteoporosis
Interventions
Not listed
Lead sponsor
Duke University
Other
Eligibility
40 Years and older · Female only
Enrollment
42 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2018
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 15, 2019 · Synced Jul 24, 2026, 2:50 AM 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 Jul 24, 2026, 2:50 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Physical Activity Following Surgery Induced Weight Loss

NCT00692367
View directory record Official record
Conditions
Obesity
Interventions
Physical Activity
Behavioral
Lead sponsor
University of Pittsburgh
Other
Eligibility
21 Years to 60 Years
Enrollment
128 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2012
U.S. locations
2
States / cities
Greenville, North Carolina • Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Nov 3, 2014 · Synced Jul 24, 2026, 2:50 AM EDT
Recruiting No phase listed Observational

Metabolic Inflexibility is Related to Elevated Muscle Anaerobic Glycolysis

NCT04320264
View directory record Official record
Conditions
Metabolic Inflexibility
Interventions
Weight loss surgery
Procedure
Lead sponsor
East Carolina University
Other
Eligibility
18 Years to 50 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
1
States / cities
Greenville, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 6, 2025 · Synced Jul 24, 2026, 2:50 AM EDT
Completed No phase listed Observational

Psychological Symptoms Among Adolescents Enrolled in a Bariatric Surgery Program

NCT01079377
View directory record Official record
Conditions
Obesity
Interventions
Not listed
Lead sponsor
New York State Psychiatric Institute
Other
Eligibility
12 Years to 18 Years
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2017
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 22, 2018 · Synced Jul 24, 2026, 2:50 AM EDT
Withdrawn Phase 4 Interventional

Sphenopalatine Ganglion Block to Prevent Shoulder Pain After Laparoscopic Bariatric Surgery

NCT02809755
View directory record Official record
Conditions
Obesity
Interventions
4% Lidocaine, Saline
Drug · Other
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years to 70 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 17, 2019 · Synced Jul 24, 2026, 2:50 AM EDT
Terminated No phase listed Observational

A Post-approval LAP-BAND® Lower Body Mass Index (LBMI) Study

NCT02356614
View directory record Official record
Conditions
Obesity, Overweight
Interventions
Not listed
Lead sponsor
Apollo Endosurgery, Inc.
Industry
Eligibility
18 Years and older
Enrollment
325 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
11
States / cities
Fountain Valley, California • Champaign, Illinois • Chicago, Illinois + 8 more
Source: ClinicalTrials.gov public record
Updated Jun 26, 2018 · Synced Jul 24, 2026, 2:50 AM EDT
Completed Phase 1 Interventional

Endoscopic Gastric Reduction for Weight Management

NCT01682733
View directory record Official record
Conditions
Obesity
Interventions
Botulinum toxin, Overstitch Endoscopic Suturing System
Drug · Device
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 50 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Apr 6, 2015 · Synced Jul 24, 2026, 2:50 AM EDT
Completed No phase listed Observational Results available

Bariatric Surgery for Morbid Obesity

NCT00675558
View directory record Official record
Conditions
Obesity, Morbid Obesity
Interventions
Initial Surgery, Second Bariatric Surgery
Procedure
Lead sponsor
Columbia University
Other
Eligibility
18 Years to 75 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2012
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 25, 2013 · Synced Jul 24, 2026, 2:50 AM EDT
Completed Not applicable Interventional Results available

Surgery or Lifestyle With Intensive Medical Management in the Treatment of Type 2 Diabetes

NCT01073020
View directory record Official record
Conditions
Type 2 Diabetes Mellitus, Obesity
Interventions
Allergan Adjustable Gastric Band Surgery, Intensive Medical Diabetes & Weight Management (Why WAIT) - Band Group, Roux-en-Y Gastric Bypass (RYGB) Surgery, Intensive Medical Diabetes & Weight Management (Why WAIT) - Bypass Group
Device · Other · Procedure
Lead sponsor
Joslin Diabetes Center
Other
Eligibility
21 Years to 65 Years
Enrollment
88 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2016
U.S. locations
2
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 27, 2021 · Synced Jul 24, 2026, 2:50 AM EDT
Completed Phase 2 Interventional

A Research Study Comparing How Well Different Doses of the Medicine NN0519-0130 Help People With Excess Body Weight Lose Weight

NCT06326060
View directory record Official record
Conditions
Obesity
Interventions
NNC0519-0130, Placebo, Tirzepatide
Drug
Lead sponsor
Novo Nordisk A/S
Industry
Eligibility
18 Years to 75 Years
Enrollment
354 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
49
States / cities
Mesa, Arizona • Little Rock, Arkansas • Searcy, Arkansas + 40 more
Source: ClinicalTrials.gov public record
Updated Apr 14, 2026 · Synced Jul 24, 2026, 2:50 AM EDT
Completed No phase listed Observational

Metabolomics of Roux-en-Y Gastric Bypass (RYGB) With Gastrostomy

NCT00887302
View directory record Official record
Conditions
Type II Diabetes Mellitus, Obesity
Interventions
Gastric Band, Gastric Sleeve, Gastrostomy Tube
Procedure
Lead sponsor
East Carolina University
Other
Eligibility
18 Years to 60 Years · Female only
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
1
States / cities
Greenville, North Carolina
Source: ClinicalTrials.gov public record
Updated Oct 5, 2023 · Synced Jul 24, 2026, 2:50 AM EDT
Terminated No phase listed Observational Accepts healthy volunteers

Bariatric and Obstructive Lung Disease Study II

NCT01127399
View directory record Official record
Conditions
Obesity, Asthma
Interventions
Not listed
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2011
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 4, 2018 · Synced Jul 24, 2026, 2:50 AM EDT
Terminated Not applicable Interventional Results available

StomaphyX Versus Sham for Revisional Surgery in Post-Roux-en-Y Patients to Reduce Regained Weight

NCT00939055
View directory record Official record
Conditions
Obesity
Interventions
StomaphyX, Sham procedure
Device · Procedure
Lead sponsor
EndoGastric Solutions
Industry
Eligibility
18 Years to 64 Years
Enrollment
112 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
2
States / cities
Columbus, Ohio • Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Nov 22, 2020 · Synced Jul 24, 2026, 2:50 AM EDT
Active, not recruiting No phase listed Observational

Long Term Outcomes of Bariatric Patients Treated With Surgery or Endoscopy

NCT03705416
View directory record Official record
Conditions
GERD, Obesity
Interventions
Endoscopy, Surgery
Procedure
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 75 Years
Enrollment
250 participants
Timeline
2019 – 2028
U.S. locations
6
States / cities
Baltimore, Maryland • New Hyde Park, New York • New York, New York + 3 more
Source: ClinicalTrials.gov public record
Updated Jun 16, 2026 · Synced Jul 24, 2026, 2:50 AM EDT
Completed No phase listed Observational

Effect of Continuous Positive Airway Pressure (CPAP) on Lower Esophageal Sphincter Pressure in Morbidly Obese Patients

NCT01099735
View directory record Official record
Conditions
Sleep Apnea, Gastroesophageal Reflux Disease
Interventions
Not listed
Lead sponsor
Oregon Health and Science University
Other
Eligibility
18 Years to 80 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Aug 29, 2019 · Synced Jul 24, 2026, 2:50 AM EDT
Completed Phase 2 Interventional

Gastric Plication and Banding

NCT02072395
View directory record Official record
Conditions
Morbid Obesity
Interventions
Plication
Procedure
Lead sponsor
Ohio State University
Other
Eligibility
18 Years to 70 Years
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Feb 19, 2017 · Synced Jul 24, 2026, 2:50 AM EDT
Not listed Not applicable Interventional

Acceptability and Feasibility of a Preoperative Very Low Calorie Diet Intervention on Surgical Weight Loss Outcomes (SAFETY)

NCT06183034
View directory record Official record
Conditions
Obesity
Interventions
Very Low Calorie Diet
Other
Lead sponsor
Hartford Hospital
Other
Eligibility
18 Years to 70 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Hartford, Connecticut
Source: ClinicalTrials.gov public record
Updated Feb 27, 2024 · Synced Jul 24, 2026, 2:50 AM 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 Jul 24, 2026, 2:50 AM EDT