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ClinicalTrials.gov public records Last synced Oct 25, 2026, 7:48 PM EDT

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Showing 1–24 of 74 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Ad Libitum Diet Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Sweetened Beverages and Food Intake

NCT00475475
View directory record Official record
Conditions
Overweight, Obesity
Interventions
Fructose, glucose, non-caloric sweetener
Behavioral
Lead sponsor
University of Washington
Other
Eligibility
18 Years to 25 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2011
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated May 2, 2012 · Synced Oct 25, 2026, 7:48 PM EDT
Completed Not applicable Interventional Results available

Metabolic Changes Induced by a Very Low Carbohydrate Diet in Youth With Type 1 Diabetes

NCT04955691
View directory record Official record
Conditions
Type1diabetes, Low Carbohydrate Diet
Interventions
low carbohydrate diet, standard carbohydrate diet
Other
Lead sponsor
Yale University
Other
Eligibility
12 Years to 21 Years
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Oct 16, 2025 · Synced Oct 25, 2026, 7:48 PM EDT
Completed Not applicable Interventional

A Low-Carbohydrate Diabetes Prevention Program

NCT03258918
View directory record Official record
Conditions
PreDiabetes
Interventions
Low-Carbohydrate Diabetes Prevention Program
Behavioral
Lead sponsor
University of Michigan
Other
Eligibility
18 Years and older
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Dec 12, 2018 · Synced Oct 25, 2026, 7:48 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Energy Balance Weight Regulation Study

NCT00619008
View directory record Official record
Conditions
Obesity
Interventions
Ad libitum low carbohydrate diet, Ad libitum High Complex Carbohydrate Diet, Energy-restricted high complex carbohydrate diet
Other
Lead sponsor
National Center for Complementary and Integrative Health (NCCIH)
NIH
Eligibility
21 Years to 65 Years
Enrollment
35 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2008
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Oct 3, 2008 · Synced Oct 25, 2026, 7:48 PM EDT
Completed Not applicable Interventional

The Effect of Time-restricted Eating on Liver Metabolism

NCT04997486
View directory record Official record
Conditions
NAFLD, Obesity, Nutritional and Metabolic Diseases
Interventions
Time restricted eating
Behavioral
Lead sponsor
University of California, Davis
Other
Eligibility
25 Years to 75 Years
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated Nov 25, 2024 · Synced Oct 25, 2026, 7:48 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Growth and Tolerance of Infants Fed Infant Formulas

NCT01808105
View directory record Official record
Conditions
Growth and Tolerance
Interventions
Control Formula, Experimental Formula 1, Experimental Formula 2, Human Milk
Other
Lead sponsor
Abbott Nutrition
Industry
Eligibility
Up to 5 Days
Enrollment
424 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
23
States / cities
Birmingham, Alabama • Dothan, Alabama • Tucson, Arizona + 19 more
Source: ClinicalTrials.gov public record
Updated Jun 2, 2014 · Synced Oct 25, 2026, 7:48 PM EDT
Completed Not applicable Interventional Results available

Food Intake Response to Short-Term Modifications of Metabolism in Humans

NCT02939404
View directory record Official record
Conditions
Healthy Volunteers
Interventions
Cold exposure, Normal temperature, Fixed diet, Ad libitum diet, Fasting
Other
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
18 Years to 55 Years
Enrollment
54 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2024
U.S. locations
1
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated Jul 4, 2025 · Synced Oct 25, 2026, 7:48 PM EDT
Not yet recruiting Not applicable Interventional

Fueling Labor: Protein Supplementation for Intrapartum Glucose Control

NCT07571343
View directory record Official record
Conditions
Diabetes During Pregnancy
Interventions
High-Protein Beverage (Genius Gourmet Sparkling Protein Water), Standard Clear Liquid Diet, Continuous Glucose Monitoring (Abbott Freestyle Libre)
Dietary Supplement · Other · Device
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
18 Years and older · Female only
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated May 6, 2026 · Synced Oct 25, 2026, 7:48 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Brain and Behavior Influences on Obesity Development From Infancy Through Childhood

NCT06861868
View directory record Official record
Conditions
Obesity and Overweight
Interventions
fMRI cue reactivity task, fMRI go no go task, Ad libitum meal test, Eating in the absence of hunger test
Other
Lead sponsor
Johns Hopkins University
Other
Eligibility
7 Years to 12 Years
Enrollment
210 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2029
U.S. locations
4
States / cities
Baltimore, Maryland • Providence, Rhode Island • Seattle, Washington
Source: ClinicalTrials.gov public record
Updated May 7, 2026 · Synced Oct 25, 2026, 7:48 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Location-based Smartphone Technology to Guide College Students Healthy Choices Ph II

NCT02996864
View directory record Official record
Conditions
Overweight and Obesity, Health Behavior, Sleep Deprivation
Interventions
Healthy Detours App, Fat Secret App
Other
Lead sponsor
Klein Buendel, Inc.
Industry
Eligibility
18 Years to 29 Years
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2018
U.S. locations
2
States / cities
Golden, Colorado • Baton Rouge, Louisiana
Source: ClinicalTrials.gov public record
Updated Feb 6, 2023 · Synced Oct 25, 2026, 7:48 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

The Effects of Exercise on Dietary Intake

NCT00943436
View directory record Official record
Conditions
Active Lifestyle Males, Inactive Lifestyle Males
Interventions
Exercise Session, Rest Session
Other
Lead sponsor
The University of Tennessee, Knoxville
Other
Eligibility
18 Years to 30 Years · Male only
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
1
States / cities
Knoxville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jun 29, 2018 · Synced Oct 25, 2026, 7:48 PM EDT
Completed Not applicable Interventional Results available

Piloting a Family-Based Intervention of Time-Restricted Eating to Treat Obesity

NCT05107726
View directory record Official record
Conditions
Childhood Obesity
Interventions
TRE Group
Behavioral
Lead sponsor
University of Minnesota
Other
Eligibility
3 Years and older
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated May 20, 2026 · Synced Oct 25, 2026, 7:48 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Comparison of Two Different Diets on Health Outcomes

NCT00269646
View directory record Official record
Conditions
Metabolic Syndrome X
Interventions
Low-carbohydrate and high-carbohydrate diets
Behavioral
Lead sponsor
University of Virginia
Other
Eligibility
18 Years to 64 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2009
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Feb 18, 2009 · Synced Oct 25, 2026, 7:48 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Evaluating a Remotely Delivered Plant-Based Behavioral Weight Loss Treatment

NCT04892030
View directory record Official record
Conditions
Obesity, Overweight
Interventions
Whole Food Plant-Based Behavioral Weight Loss Treatment
Behavioral
Lead sponsor
Drexel University
Other
Eligibility
18 Years to 75 Years
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 1, 2021 · Synced Oct 25, 2026, 7:48 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Alternate Day Fasting for Weight Loss, Weight Maintenance and Cardio-protection

NCT00960505
View directory record Official record
Conditions
Coronary Heart Disease, Obesity, Weight Loss
Interventions
Alternate day fasting, Calorie restriction, Control diet
Other
Lead sponsor
University of Illinois at Chicago
Other
Eligibility
18 Years to 65 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2015
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jul 21, 2020 · Synced Oct 25, 2026, 7:48 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Time Restricted Eating for Weight Management

NCT04692532
View directory record Official record
Conditions
Obesity
Interventions
8-hour Time restricted eating, Calorie restriction
Other
Lead sponsor
University of Illinois at Chicago
Other
Eligibility
18 Years to 65 Years
Enrollment
90 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2025
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jul 27, 2026 · Synced Oct 25, 2026, 7:48 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Facilitating Participation in a Prostate Cancer Risk Assessment Program

NCT02126319
View directory record Official record
Conditions
Prostate Cancer
Interventions
Cognitive Affective preparation, General Health Education
Behavioral
Lead sponsor
Fox Chase Cancer Center
Other
Eligibility
34 Years to 69 Years · Male only
Enrollment
128 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1998 – 2002
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 6, 2017 · Synced Oct 25, 2026, 7:48 PM EDT
Recruiting Not applicable Interventional

Fasting During Neoadjuvant Chemotherapy in Patient With Epithelial Ovarian Cancer

NCT06386887
View directory record Official record
Conditions
Epithelial Ovarian Cancer
Interventions
Intermittent Fasting, Neoadjuvant chemotherapy
Behavioral · Drug
Lead sponsor
Case Comprehensive Cancer Center
Other
Eligibility
18 Years and older · Female only
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 6, 2026 · Synced Oct 25, 2026, 7:48 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 25, 2026, 7:48 PM EDT
Completed Not applicable Interventional Results available

Health, Aging and Later-Life Outcomes

NCT05424042
View directory record Official record
Conditions
Aging
Interventions
In-Person Caloric Restriction, Remote Caloric Restriction, Time-restricted
Behavioral
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
60 Years and older
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Oct 27, 2025 · Synced Oct 25, 2026, 7:48 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Framingham State Food Study

NCT02068885
View directory record Official record
Conditions
Obesity, Diabetes, Cardiovascular Disease
Interventions
Feeding study
Behavioral
Lead sponsor
Boston Children's Hospital
Other
Eligibility
18 Years to 65 Years
Enrollment
234 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2017
U.S. locations
1
States / cities
Framingham, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 9, 2026 · Synced Oct 25, 2026, 7:48 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 25, 2026, 7:48 PM EDT
Completed Phase 4 Interventional Results available

Combination Nicotine Replacement for Alcoholic Smokers

NCT00064844
View directory record Official record
Conditions
Smoking, Alcoholism
Interventions
Cognitive Behavior Therapy for alcohol and smoking cessation, Nicoderm CQ nicotine patch, Placebo gum, Nicotine gum - Nicorette®
Behavioral · Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years and older
Enrollment
96 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2006
U.S. locations
1
States / cities
Newington, Connecticut
Source: ClinicalTrials.gov public record
Updated Aug 13, 2021 · Synced Oct 25, 2026, 7:48 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Factors Affecting Caloric Regulation in Human Feeding

NCT00108784
View directory record Official record
Conditions
Obesity
Interventions
Reduced-energy-density diet
Behavioral
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
20 Years to 60 Years · Female only
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2004
U.S. locations
1
States / cities
State College, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 13, 2010 · Synced Oct 25, 2026, 7:48 PM EDT