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ClinicalTrials.gov public records Last synced Oct 17, 2026, 9:33 AM EDT

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Showing 1–24 of 25 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Weight Watchers Clear all
Completed Not applicable Interventional

The Effects of Fiber Fortified Foods to the Diets of Chronic Kidney Disease Patients

NCT01842087
View directory record Official record
Conditions
Chronic Kidney Disease
Interventions
Control Food, Fiber Fortified Food
Other
Lead sponsor
University of Florida
Other
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Mar 18, 2020 · Synced Oct 17, 2026, 9:33 AM EDT
Completed Not applicable Interventional

Project Fluido: Fluid Watchers

NCT02083744
View directory record Official record
Conditions
Congestive Heart Failure
Interventions
PsychoEducational Support, Usual Care
Behavioral
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older
Enrollment
42 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Feb 17, 2020 · Synced Oct 17, 2026, 9:33 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Managing Obesity by Combining Behavioral Weight Loss and Commercial Approaches

NCT00827593
View directory record Official record
Conditions
Obesity
Interventions
Standard behavioral weight loss treatment, Weight Watchers, Combined Treatment
Behavioral
Lead sponsor
Baruch College City University of New York
Other
Eligibility
30 Years to 65 Years
Enrollment
144 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2011
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 13, 2012 · Synced Oct 17, 2026, 9:33 AM EDT
Completed Not applicable Interventional

Weight Watchers Online

NCT01888172
View directory record Official record
Conditions
Overweight, Obesity
Interventions
Weight Watchers Online Program, Philips ActiveLink, Eating and Activity Newsletter
Behavioral · Device
Lead sponsor
The Miriam Hospital
Other
Eligibility
18 Years to 70 Years
Enrollment
270 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
2
States / cities
Providence, Rhode Island • Knoxville, Tennessee
Source: ClinicalTrials.gov public record
Updated Sep 23, 2015 · Synced Oct 17, 2026, 9:33 AM EDT
Completed Not applicable Interventional

Evaluation of a Commercial Program on Weight Loss and Health Outcomes

NCT03037567
View directory record Official record
Conditions
Overweight and Obesity
Interventions
Modified Weight Watchers plan
Behavioral
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 75 Years
Enrollment
152 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated May 18, 2018 · Synced Oct 17, 2026, 9:33 AM EDT
Completed No phase listed Observational

Weight Loss Counseling for African American Women Who Are Breast Cancer Survivors

NCT00872677
View directory record Official record
Conditions
Breast Cancer, Obesity, Weight Changes
Interventions
Diet, Spiritual counseling
Behavioral · Other
Lead sponsor
Barbara Ann Karmanos Cancer Institute
Other
Eligibility
18 Years to 70 Years · Female only
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2008
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Apr 29, 2013 · Synced Oct 17, 2026, 9:33 AM EDT
Completed Not applicable Interventional

Health At Every Size and Acceptance and Commitment Therapy vs. Behavioral Weight Loss for Obesity and Depression in Women

NCT02501239
View directory record Official record
Conditions
Depression, Obesity
Interventions
Accept Yourself!, Weight Watchers
Behavioral
Lead sponsor
Dartmouth-Hitchcock Medical Center
Other
Eligibility
18 Years and older · Female only
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
1
States / cities
Lebanon, New Hampshire
Source: ClinicalTrials.gov public record
Updated Apr 26, 2018 · Synced Oct 17, 2026, 9:33 AM EDT
Completed Not applicable Interventional

Weight Watchers Online 2015

NCT02417220
View directory record Official record
Conditions
Obesity, Overweight, Body Weight
Interventions
Weight Watchers Online 2015 Program, Electronic Scale with Feedback
Behavioral · Other
Lead sponsor
The Miriam Hospital
Other
Eligibility
18 Years to 70 Years
Enrollment
92 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
2
States / cities
Providence, Rhode Island • Knoxville, Tennessee
Source: ClinicalTrials.gov public record
Updated Mar 29, 2016 · Synced Oct 17, 2026, 9:33 AM EDT
Completed Phase 3 Interventional

Weight Loss Study for People With Type 2 Diabetes

NCT01601574
View directory record Official record
Conditions
Type 2 Diabetes, Overweight, Obesity
Interventions
Weight Watchers modified program, Standard Care group
Behavioral · Other
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years to 70 Years
Enrollment
563 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
15
States / cities
Birmingham, Alabama • La Jolla, California • Augusta, Georgia + 11 more
Source: ClinicalTrials.gov public record
Updated Oct 15, 2014 · Synced Oct 17, 2026, 9:33 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Evaluation of a Commercial Program on Weight Loss and Health Outcomes

NCT02585193
View directory record Official record
Conditions
Weight Loss
Interventions
Weight Watchers Intervention
Behavioral
Lead sponsor
University of Pittsburgh
Other
Eligibility
18 Years and older
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 24, 2017 · Synced Oct 17, 2026, 9:33 AM EDT
Completed Not applicable Interventional

Assessing the Effectiveness of a Weight Watchers-based Lifestyle Intervention for the Primary Prevention of Type 2 Diabetes

NCT02000024
View directory record Official record
Conditions
Prediabetes, Gestational Diabetes Mellitus, Obesity
Interventions
Weight Watchers, National Diabetes Education Program
Behavioral
Lead sponsor
Indiana University
Other
Eligibility
18 Years and older
Enrollment
225 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2016
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Apr 8, 2016 · Synced Oct 17, 2026, 9:33 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Evaluation of a Commercial Program on Weight Loss and Health Outcomes 2

NCT03079128
View directory record Official record
Conditions
Weight Loss
Interventions
Intervention
Behavioral
Lead sponsor
University of Pittsburgh
Other
Eligibility
18 Years to 75 Years
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 4, 2018 · Synced Oct 17, 2026, 9:33 AM EDT
Completed Not applicable Interventional Results available

Financial Incentives for Maintenance of Weight Loss

NCT01900392
View directory record Official record
Conditions
Obesity
Interventions
Financial incentive
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
30 Years to 80 Years
Enrollment
191 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 27, 2018 · Synced Oct 17, 2026, 9:33 AM EDT
Completed Not applicable Interventional

Financial Incentives for Weight Reduction Study

NCT03157713
View directory record Official record
Conditions
Obese
Interventions
Goal-Directed Financial Incentives, Enhanced Usual Care, Outcome-based Financial Incentives
Behavioral
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years to 70 Years
Enrollment
668 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2021
U.S. locations
2
States / cities
Sylmar, California • Brooklyn, New York
Source: ClinicalTrials.gov public record
Updated May 30, 2023 · Synced Oct 17, 2026, 9:33 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Neurocognitive Benefits of a Weight Management Program

NCT04202133
View directory record Official record
Conditions
Overweight and Obesity
Interventions
WW (formerly Weight Watchers), Waitlist
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 60 Years · Female only
Enrollment
61 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 10, 2025 · Synced Oct 17, 2026, 9:33 AM EDT
Completed Phase 4 Interventional Results available

A Toolbox Approach to Obesity Treatment in Primary Care

NCT01922934
View directory record Official record
Conditions
Obesity
Interventions
Commercial weight loss program, Colorado Weigh, Meal replacements, Obesity pharmacotherapy, Recreation center passes
Behavioral · Dietary Supplement · Drug
Lead sponsor
Denver Health and Hospital Authority
Other
Eligibility
18 Years to 80 Years
Enrollment
4,730 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated Aug 18, 2017 · Synced Oct 17, 2026, 9:33 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 17, 2026, 9:33 AM EDT
Withdrawn Phase 4 Interventional Accepts healthy volunteers

Laparoscopic Sleeve Gastrectomy Plus Weight Watchers vs. Weight Watchers Alone in Underserved Minority Women

NCT01929850
View directory record Official record
Conditions
Morbid Obesity
Interventions
Laparscopic Sleeve Gastrectomy, Weight Watchers Program
Procedure · Behavioral
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years to 65 Years · Female only
Healthy volunteers
Accepts healthy volunteers
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated May 8, 2015 · Synced Oct 17, 2026, 9:33 AM EDT
Completed Not applicable Interventional

Study of an International Commercial Program on Weight Loss and Health Outcomes

NCT03571893
View directory record Official record
Conditions
Weight Loss, Weight Change, Body, Obesity, Diet Modification
Interventions
Weight Watchers Freestyle (Flex), DIY Personal Plan
Behavioral
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 75 Years
Enrollment
373 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Mar 13, 2020 · Synced Oct 17, 2026, 9:33 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Brief Behavioral Weight Loss Treatment vs. Weight Watchers

NCT00249340
View directory record Official record
Conditions
Obesity, Overweight
Interventions
Weight Watchers, brief behavioral weight loss treatment, brief behavioral + Weight Watchers combined treatment
Behavioral
Lead sponsor
The Miriam Hospital
Other
Eligibility
21 Years to 65 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2006
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Apr 11, 2007 · Synced Oct 17, 2026, 9:33 AM EDT
Completed Not applicable Interventional

My Lifestyle Intervention of Food and Exercise

NCT01630499
View directory record Official record
Conditions
Breast Cancer
Interventions
Tailored Lifestyle Intervention (TLI), Commercial Weight Loss Program (CWLP)
Behavioral
Lead sponsor
University of Florida
Other
Eligibility
21 Years to 65 Years · Female only
Enrollment
87 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
2
States / cities
Gainesville, Florida • Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Sep 30, 2016 · Synced Oct 17, 2026, 9:33 AM EDT
Completed Not applicable Interventional

Stanford Healthy Heart Study

NCT03014414
View directory record Official record
Conditions
Obesity
Interventions
Fun First, Weight Watchers
Behavioral
Lead sponsor
Stanford University
Other
Eligibility
21 Years and older
Enrollment
321 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2022
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated Oct 2, 2026 · Synced Oct 17, 2026, 9:33 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Efficacy of mHealth Apps for Health in a Low-income, Type II Diabetic, Hispanic Population

NCT05279729
View directory record Official record
Conditions
Diabetes Mellitus, Type 2, Obesity
Interventions
Mobile health application
Other
Lead sponsor
San Diego State University
Other
Eligibility
18 Years to 64 Years
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2028
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Oct 2, 2026 · Synced Oct 17, 2026, 9:33 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Delicious Eating for Life in Southern Homes

NCT04302727
View directory record Official record
Conditions
Weight Loss, Diet, Healthy, Cardiovascular Risk Factor
Interventions
Med-South Weight Loss Intervention, WW
Behavioral
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 75 Years
Enrollment
360 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2024
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Nov 3, 2025 · Synced Oct 17, 2026, 9:33 AM EDT