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ClinicalTrials.gov public records Last synced Oct 2, 2026, 3:21 PM EDT

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Showing 25–48 of 189 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Dietary energy restriction Clear all
Completed Not applicable Interventional

Impact of Weight Loss on Physical Function

NCT02079051
View directory record Official record
Conditions
Obesity
Interventions
Moderate intensity weight loss, High intensity medical weight loss
Behavioral
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
65 Years and older
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 9, 2018 · Synced Oct 2, 2026, 3:21 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

CALERIE (Washington University): Comprehensive Assessment of Long-term Effects of Reducing Intake of Energy

NCT00099138
View directory record Official record
Conditions
Aging
Interventions
Caloric Restriction (CR), Exercise
Behavioral
Lead sponsor
National Institute on Aging (NIA)
NIH
Eligibility
50 Years to 60 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2002 – 2006
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Dec 11, 2009 · Synced Oct 2, 2026, 3:21 PM EDT
Completed Not applicable Interventional

FRESH-TEEN: Families Responsibility Education Support Health for Teens

NCT03674944
View directory record Official record
Conditions
Overweight and Obesity
Interventions
Behavioral Weight Loss (BWL) + Emotion Regulation (ER), Behavioral Weight Loss (BWL)
Behavioral
Lead sponsor
University of California, San Diego
Other
Eligibility
13 Years to 16 Years
Enrollment
332 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2024
U.S. locations
2
States / cities
La Jolla, California • Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Sep 24, 2024 · Synced Oct 2, 2026, 3:21 PM EDT
Completed Not applicable Interventional

Weight Loss-Independent Metabolic Effects of Roux-En-Y Gastric Bypass in Diabetes

NCT02207777
View directory record Official record
Conditions
Obesity, Type 2 Diabetes
Interventions
Roux-en-Y gastric bypass surgery, Low-calorie diet
Procedure · Behavioral
Lead sponsor
Washington University School of Medicine
Other
Eligibility
25 Years to 65 Years
Enrollment
65 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2019
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jul 20, 2025 · Synced Oct 2, 2026, 3:21 PM EDT
Terminated Phase 3 Interventional Results available

Effect of Weight and Insulin Sensitivity on Reproductive Function in PCOS

NCT01482286
View directory record Official record
Conditions
Polycystic Ovary Syndrome
Interventions
Metformin, Dietary Restriction, Exercise Training
Drug · Behavioral
Lead sponsor
Pennington Biomedical Research Center
Other
Eligibility
20 Years to 40 Years · Female only
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
1
States / cities
Baton Rouge, Louisiana
Source: ClinicalTrials.gov public record
Updated Mar 15, 2022 · Synced Oct 2, 2026, 3:21 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

The Personalized Nutrition Study

NCT04145466
View directory record Official record
Conditions
Weight Loss
Interventions
High-fat diet, High-carbohydrate diet
Behavioral
Lead sponsor
Pennington Biomedical Research Center
Other
Eligibility
18 Years to 75 Years
Enrollment
145 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2023
U.S. locations
1
States / cities
Baton Rouge, Louisiana
Source: ClinicalTrials.gov public record
Updated Jan 30, 2025 · Synced Oct 2, 2026, 3:21 PM EDT
Terminated Not applicable Interventional

The Impact of Time Restricted Eating on Type 2 Diabetes

NCT06887543
View directory record Official record
Conditions
Type 2 Diabetes
Interventions
Meal timing, Time restricted eating, Usual feeding pattern.
Other
Lead sponsor
Rockefeller University
Other
Eligibility
18 Years to 75 Years
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 20, 2026 · Synced Oct 2, 2026, 3:21 PM EDT
Completed Not applicable Interventional Results available

Prolonged Daily Fasting as a Viable Alternative to Caloric Restriction in At-Risk Obese Humans

NCT04259632
View directory record Official record
Conditions
Obesity
Interventions
Time Restricted Eating (TRE), Caloric Restriction (CR)
Behavioral
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 65 Years
Enrollment
115 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 23, 2026 · Synced Oct 2, 2026, 3:21 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Caloric Restriction, Exercise, and Glucoregulation in Humans

NCT00777621
View directory record Official record
Conditions
Diabetes
Interventions
Calorie Restriction, Exercise, Calorie Restriction and Exercise
Other
Lead sponsor
St. Louis University
Other
Eligibility
45 Years to 65 Years
Enrollment
69 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2015
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Feb 12, 2016 · Synced Oct 2, 2026, 3:21 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Resistance Exercise and Protein During Weight Loss

NCT03600311
View directory record Official record
Conditions
Weight Loss, Starvation
Interventions
Caloric Restriction, Post-Exercise Protein, Energy Balance, Post-Exercise Carbohydrate, Calcium and Vitamin D
Other · Dietary Supplement
Lead sponsor
University of Nebraska Lincoln
Other
Eligibility
19 Years to 30 Years
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Lincoln, Nebraska
Source: ClinicalTrials.gov public record
Updated Jun 12, 2019 · Synced Oct 2, 2026, 3:21 PM EDT
Recruiting Phase 2 Interventional

Caloric Restriction and Activity to Reduce Chemoresistance in B-ALL

NCT05082519
View directory record Official record
Conditions
B-cell Acute Lymphoblastic Leukemia, Obesity
Interventions
IDEAL2 Intervention
Behavioral
Lead sponsor
Etan Orgel
Other
Eligibility
7 Years to 25 Years
Enrollment
240 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2032
U.S. locations
16
States / cities
Los Angeles, California • Orange, California • San Francisco, California + 13 more
Source: ClinicalTrials.gov public record
Updated Aug 19, 2026 · Synced Oct 2, 2026, 3:21 PM EDT
Completed Phase 3 Interventional Results available

Improving Reproductive Fitness Through Pretreatment With Lifestyle Modification in Obese Women With Unexplained Infertility

NCT02432209
View directory record Official record
Conditions
Infertility, Female
Interventions
Caloric Restriction, Orlistat, Moderate physical activity
Other · Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 40 Years · Female only
Enrollment
379 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2020
U.S. locations
10
States / cities
San Francisco, California • Augusta, Georgia • Southfield, Michigan + 7 more
Source: ClinicalTrials.gov public record
Updated Feb 3, 2022 · Synced Oct 2, 2026, 3:21 PM EDT
Recruiting Not applicable Interventional

Ketogenic and Carnivore (Lion) Diets for Inflammatory Bowel Disease and Rheumatoid Arthritis

NCT07524244
View directory record Official record
Conditions
Rheumatoid Arthritis (RA), Crohn's Disease (CD), Ulcerative Colitis (UC)
Interventions
Ketogenic diet, Carnivore (Lion) Diet
Behavioral
Lead sponsor
Fuller Research Foundation
Other
Eligibility
18 Years to 64 Years
Enrollment
160 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Apr 16, 2026 · Synced Oct 2, 2026, 3:21 PM EDT
Not listed Phase 1 Interventional Accepts healthy volunteers

Study of Treatment and Metabolism in Patients With Urea Cycle Disorders

NCT00004307
View directory record Official record
Conditions
Amino Acid Metabolism, Inborn Errors
Interventions
Protein and calorie controlled diet, Ornithine transcarbamylase vector
Behavioral · Genetic
Lead sponsor
National Center for Research Resources (NCRR)
NIH
Eligibility
6 Months to 64 Years
Enrollment
66 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 1999
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jun 24, 2005 · Synced Oct 2, 2026, 3:21 PM EDT
Completed Not applicable Interventional

The Liver Health Study for Patients with NAFLD

NCT03151798
View directory record Official record
Conditions
Nonalcoholic Fatty Liver, Nonalcoholic Steatohepatitis, Obesity
Interventions
Phase II: Lifestyle treatment, Phase II: Control treatment, Phase I: Observational studies
Behavioral · Other
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
22 Years to 65 Years
Enrollment
336 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2023
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated Dec 19, 2024 · Synced Oct 2, 2026, 3:21 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Time-restricted Eating Versus Daily Continuous Calorie Restriction on Body Weight and Colorectal Cancer Risk Markers

NCT05114798
View directory record Official record
Conditions
Time Restricted Eating, Obesity, Weight Loss, Colorectal Cancer
Interventions
Time restricted eating, Calorie Restriction
Behavioral
Lead sponsor
University of Illinois at Chicago
Other
Eligibility
45 Years to 70 Years
Enrollment
194 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2027
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jul 21, 2026 · Synced Oct 2, 2026, 3:21 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Calorie Restriction on Accumulation of Old, Modified Proteins in Abdominally Obese Adults

NCT01497106
View directory record Official record
Conditions
Insulin Resistance
Interventions
Calorie Restriction, Control (normal living)
Behavioral
Lead sponsor
Mayo Clinic
Other
Eligibility
45 Years to 65 Years
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2014
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Nov 26, 2014 · Synced Oct 2, 2026, 3:21 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Intermittent Fasting Versus Daily Caloric Restriction for Weight Loss

NCT03411356
View directory record Official record
Conditions
Obesity
Interventions
Daily Caloric Restriction (DCR), Intermittent Fasting (IMF)
Behavioral
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years to 60 Years
Enrollment
165 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2023
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Feb 17, 2026 · Synced Oct 2, 2026, 3:21 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Ketone Conferred Resiliency Against Sleep Restriction With Nutritional Intervention.

NCT06075914
View directory record Official record
Conditions
Sleep Deprivation, Nutritional Intervention
Interventions
Ketogenic Intervention, Mediterranean Intervention, Placebo, Ketone Ester
Other · Dietary Supplement
Lead sponsor
Ohio State University
Other
Eligibility
18 Years to 40 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Jun 24, 2026 · Synced Oct 2, 2026, 3:21 PM EDT
Not yet recruiting Phase 4 Interventional

Heterogeneity of Diabetes: Integrated Muli-Omics to Identify Physiologic Subphenotypes and Evaluate Targeted Prevention

NCT06682351
View directory record Official record
Conditions
Prediabetes / Type 2 Diabetes
Interventions
Metformin, GLP-1A, MED
Drug · Dietary Supplement
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 75 Years
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Nov 12, 2024 · Synced Oct 2, 2026, 3:21 PM EDT
Completed Not applicable Interventional

The Healthy Eating Choices for Life Program

NCT01096719
View directory record Official record
Conditions
Obesity
Interventions
Standard Behavioral Weight Loss Intervention, Dietary Goal: Reduction in Energy Density of Dietary Intake, Dietary Goal: Reduction of Energy Intake
Behavioral
Lead sponsor
The University of Tennessee, Knoxville
Other
Eligibility
21 Years to 65 Years
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Knoxville, Tennessee
Source: ClinicalTrials.gov public record
Updated Apr 5, 2018 · Synced Oct 2, 2026, 3:21 PM EDT
Terminated Not applicable Interventional

Reducing Insulin, Growth Hormones, and Tumors

NCT03785808
View directory record Official record
Conditions
Diet Modification, Lung Cancer
Interventions
Special Diet Therapy (low-carb), Special Diet Therapy (low-fat), Special Diet Therapy (USDA control)
Behavioral
Lead sponsor
Fred Hutchinson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Aug 12, 2019 · Synced Oct 2, 2026, 3:21 PM EDT
Completed Not applicable Interventional

A Pilot Study to Determine the Efficacy of a Low Carbohydrate Diet in Treatment of Adolescents With Metabolic Syndrome

NCT00940966
View directory record Official record
Conditions
Elevated Triglycerides, Systolic Hypertension, Insulin Resistance, Abdominal Obesity
Interventions
standard ADA diet, energy restricted very-low carbohydrate diet, low glycemic diet
Dietary Supplement
Lead sponsor
CAMC Health System
Other
Eligibility
12 Years to 18 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2012
U.S. locations
1
States / cities
Charleston, West Virginia
Source: ClinicalTrials.gov public record
Updated Aug 21, 2026 · Synced Oct 2, 2026, 3:21 PM EDT
Terminated Phase 2 Interventional

Effects of Caloric Restriction Alone Versus Postoperative Caloric Restriction Following Bariatric Surgery on Glucose Metabolism in Patients With Diabetes Mellitus

NCT01083108
View directory record Official record
Conditions
Obesity, Bariatric Surgery, Morbid Obesity, Diabetes Mellitus Type 2, Diet Therapy
Interventions
Roux-en-Y Gastric Bypass, Caloric Restriction
Other
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
18 Years to 60 Years
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2019
U.S. locations
3
States / cities
Baltimore, Maryland • Bethesda, Maryland • Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Dec 17, 2019 · Synced Oct 2, 2026, 3:21 PM EDT