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Showing 1–24 of 1,704 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: diet modification Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Make Better Choices

NCT01249989
View directory record Official record
Conditions
Health Behavior
Interventions
Sequential MBC Condition, Simultaneous MBC Condition, Stress Management
Behavioral
Lead sponsor
Northwestern University
Other
Eligibility
18 Years to 65 Years
Enrollment
212 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2015
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jun 11, 2017 · Synced Sep 8, 2026, 5:17 PM EDT
Not listed Phase 3 Interventional

A Weight-Loss Program in Helping Obese Black Women Lose Weight

NCT00859989
View directory record Official record
Conditions
Breast Cancer, Obesity, Weight Changes
Interventions
behavioral dietary intervention, exercise intervention, telephone-based intervention, counseling intervention, educational intervention, immunoenzyme technique, laboratory biomarker analysis, questionnaire administration, study of socioeconomic and demographic variables, evaluation of cancer risk factors, support group therapy
Behavioral · Other · Procedure
Lead sponsor
University of Illinois at Chicago
Other
Eligibility
30 Years to 50 Years · Female only
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2004
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Dec 17, 2013 · Synced Sep 8, 2026, 5:17 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Engaging Self-regulation Targets to Improve Mood and Weight and Understand Mechanism in Depressed and Obese Adults

NCT03841682
View directory record Official record
Conditions
Obesity, Depression
Interventions
I-CARE2
Behavioral
Lead sponsor
University of Illinois at Chicago
Other
Eligibility
18 Years and older
Enrollment
106 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
2
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Oct 20, 2021 · Synced Sep 8, 2026, 5:17 PM EDT
Active, not recruiting No phase listed Observational Accepts healthy volunteers

The CALERIE™ Legacy Study

NCT05651620
View directory record Official record
Conditions
Calorie Restriction
Interventions
Not listed
Lead sponsor
Tufts University
Other
Eligibility
33 Years to 70 Years
Enrollment
216 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2028
U.S. locations
3
States / cities
Baton Rouge, Louisiana • Boston, Massachusetts • St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jun 8, 2026 · Synced Sep 8, 2026, 5:17 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Impact of an Online Behavioral Weight Loss Program

NCT01492413
View directory record Official record
Conditions
Overweight, Obesity
Interventions
online lifestyle counseling and a fortified diet beverage
Behavioral
Lead sponsor
Baylor College of Medicine
Other
Eligibility
18 Years to 65 Years
Enrollment
572 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2011
U.S. locations
2
States / cities
Philadelphia, Pennsylvania • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Dec 14, 2011 · Synced Sep 8, 2026, 5:17 PM EDT
Recruiting Not applicable Interventional

A Randomized Controlled Trial of a Nutritional Intervention for Endometriosis

NCT07090096
View directory record Official record
Conditions
Endometriosis
Interventions
A whole food plant based diet
Other
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2029
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Apr 27, 2026 · Synced Sep 8, 2026, 5:17 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Employing eSBI in HIV Testing for At-risk Youth

NCT02703116
View directory record Official record
Conditions
HIV, Substance Use
Interventions
Alcohol Use BI, Nutrition Intervention
Behavioral
Lead sponsor
Ann & Robert H Lurie Children's Hospital of Chicago
Other
Eligibility
16 Years to 25 Years
Enrollment
464 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2020
U.S. locations
3
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Nov 14, 2021 · Synced Sep 8, 2026, 5:17 PM EDT
Recruiting Not applicable Interventional

Diet Order Effects of Low Fat vs. Low Carb Diets on Body Fat Change

NCT06325722
View directory record Official record
Conditions
Overweight, Obesity
Interventions
Low-carbohydrate Diet, Low-fat Diet
Other
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
18 Years to 50 Years
Enrollment
42 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2029
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 30, 2026 · Synced Sep 8, 2026, 5:17 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Isocaloric Dietary Interventions for Insulin Resistance and the Metabolic Syndrome

NCT01040663
View directory record Official record
Conditions
Obesity
Interventions
Dietary intervention
Other
Lead sponsor
Rockefeller University
Other
Eligibility
18 Years to 65 Years
Enrollment
42 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2013
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 9, 2013 · Synced Sep 8, 2026, 5:17 PM EDT
Active, not recruiting Not applicable Interventional

Low-Fat Diet and Fish Oil in Men on Active Surveillance for Prostate Cancer

NCT02176902
View directory record Official record
Conditions
Adenocarcinoma of the Prostate, Stage I Prostate Cancer, Stage IIA Prostate Cancer, Stage IIB Prostate Cancer
Interventions
behavioral dietary intervention, omega-3 fatty acid, laboratory biomarker analysis
Behavioral · Dietary Supplement · Other
Lead sponsor
Jonsson Comprehensive Cancer Center
Other
Eligibility
50 Years to 80 Years · Male only
Enrollment
107 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2026
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Feb 9, 2025 · Synced Sep 8, 2026, 5:17 PM EDT
Completed Not applicable Interventional Results available

Eplerenone in HIV Associated Abdominal Fat Accumulation

NCT01405456
View directory record Official record
Conditions
HIV
Interventions
Eplerenone and lifestyle, placebo and lifestyle
Drug · Other
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
30 Years to 65 Years
Enrollment
46 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2017
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 14, 2018 · Synced Sep 8, 2026, 5:17 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Web-based Physical Activity Intervention for Children

NCT05254483
View directory record Official record
Conditions
Physical Activity in Children
Interventions
UNICEF kid power program immediately, UNICEF kid power program for waitlist control, ActiGraph Accelerometer
Behavioral · Device
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
8 Years to 11 Years
Enrollment
82 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Oct 13, 2022 · Synced Sep 8, 2026, 5:17 PM EDT
Completed Phase 4 Interventional

Adjustable Gastric Banding and Its Effects on Postprandial Glucose Metabolism Independent of Weight Loss

NCT01094054
View directory record Official record
Conditions
Obesity, Diabetes
Interventions
Adjustable gastric banding, Dietary and lifestyle modification
Procedure · Behavioral
Lead sponsor
Mayo Clinic
Other
Eligibility
30 Years to 65 Years
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated May 9, 2013 · Synced Sep 8, 2026, 5:17 PM EDT
Completed Phase 3 Interventional

Behavioral Treatment for Obese Preschoolers

NCT01546727
View directory record Official record
Conditions
Obesity
Interventions
Behavioral Family Intervention, Motivational Interviewing
Behavioral
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
2 Years to 5 Years
Enrollment
167 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Dec 27, 2016 · Synced Sep 8, 2026, 5:17 PM EDT
Completed Not applicable Interventional Results available

A Physical Activity Program in End-state Liver Disease

NCT02776553
View directory record Official record
Conditions
End-stage Liver Disease (ESLD), Liver Transplant, Sarcopenia, Poor Physical Fitness, Cirrhosis, Portal Hypertension
Interventions
Nutritional consultation, Physical training program, Behavioral modification therapy
Other · Behavioral
Lead sponsor
University of Arkansas
Other
Eligibility
40 Years to 70 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
1
States / cities
Little Rock, Arkansas
Source: ClinicalTrials.gov public record
Updated Aug 5, 2020 · Synced Sep 8, 2026, 5:17 PM EDT
Withdrawn Phase 2 Interventional

Carotenoid Rich Diet in Treating Cervical Dysplasia

NCT00003094
View directory record Official record
Conditions
Cervical Cancer
Interventions
preventative dietary intervention
Other
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years to 55 Years · Female only
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 1997
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated May 19, 2014 · Synced Sep 8, 2026, 5:17 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Studying Genes, Environment, and Prostate Cancer Risk in Patients With or Without Prostate Cancer

NCT01013129
View directory record Official record
Conditions
Hereditary Prostate Cancer, Prostate Cancer
Interventions
DNA analysis, polymorphism analysis, laboratory biomarker analysis, medical chart review, questionnaire administration, evaluation of cancer risk factors, study of high risk factors
Genetic · Other · Procedure
Lead sponsor
Portland VA Medical Center
Federal
Eligibility
21 Years to 120 Years · Male only
Enrollment
748 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2012
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Nov 10, 2021 · Synced Sep 8, 2026, 5:17 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Examining Cooking as a Health Behavior

NCT03783962
View directory record Official record
Conditions
Obesity
Interventions
Active Intervention - Cooking, Demonstrations - Cooking
Behavioral
Lead sponsor
University of Vermont
Other
Eligibility
18 Years and older
Enrollment
56 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated May 16, 2021 · Synced Sep 8, 2026, 5:17 PM EDT
Completed Not applicable Interventional

BfedBwell Proof-of-Concept Pilot

NCT06191666
View directory record Official record
Conditions
Cancer Survivorship, Obesity, Overweight
Interventions
Group-based education and discussion, Individual 1:1 counseling, Group based behavioral skills development and cooking demonstrations, BfitBwell
Behavioral
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years to 75 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Feb 10, 2026 · Synced Sep 8, 2026, 5:17 PM EDT
Terminated Not applicable Interventional Results available

Increasing Cure Rate of Hepatitis C Therapy in Obese Hepatitis C Patients

NCT00871845
View directory record Official record
Conditions
Obesity, Insulin Resistance, Metabolic Syndrome, Hepatitis C
Interventions
Dietary and Lifestyle modification educational sessions
Behavioral
Lead sponsor
Hossam Kandil
Other
Eligibility
18 Years and older
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Nov 4, 2018 · Synced Sep 8, 2026, 5:17 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Cooking for Your Health in Southern New Mexico: an 8-week, Bilingual (English and Spanish) Nutritional Intervention in Adults Living in Doña Ana and Otero Counties

NCT06609057
View directory record Official record
Conditions
Dietary Carcinogenesis, Nutrition, Healthy
Interventions
Nutritional Intervention, Questionnaire Administration, Survey Administration, Discussion
Other
Lead sponsor
Fred Hutchinson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
70 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
Las Cruces, New Mexico
Source: ClinicalTrials.gov public record
Updated Sep 1, 2026 · Synced Sep 8, 2026, 5:17 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Internet-Based Nutrition Education Program in Preventing Cancer in Participants of Health Maintenance Organizations

NCT00169312
View directory record Official record
Conditions
Unspecified Adult Solid Tumor, Protocol Specific
Interventions
behavioral dietary intervention, dietary intervention, educational intervention, internet-based intervention, preventative dietary intervention, evaluation of cancer risk factors
Behavioral · Dietary Supplement · Other + 1 more
Lead sponsor
Josephine Ford Cancer Center
Other
Eligibility
21 Years to 65 Years
Enrollment
2,619 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2007
U.S. locations
4
States / cities
Denver, Colorado • Atlanta, Georgia • Minneapolis, Minnesota + 1 more
Source: ClinicalTrials.gov public record
Updated Sep 19, 2013 · Synced Sep 8, 2026, 5:17 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Lifestyle Interventions for Long Term Diabetes Control

NCT00364312
View directory record Official record
Conditions
Type 2 Diabetes
Interventions
diet and physical activity
Behavioral
Lead sponsor
University of Virginia
Other
Eligibility
18 Years and older
Enrollment
390 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2009
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Aug 14, 2006 · Synced Sep 8, 2026, 5:17 PM 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 17, 2018 · Synced Sep 8, 2026, 5:17 PM EDT