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Showing 1–24 of 74 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Ad libitum diet Clear all
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 5, 2026 · Synced Sep 3, 2026, 4:18 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 12, 2021 · Synced Sep 3, 2026, 4:18 PM EDT
Completed Not applicable Interventional

Assessment of Plant-based Program Using Shared Medical Appointment

NCT05889715
View directory record Official record
Conditions
Chronic Disease, Nutrition, Healthy
Interventions
Green Wellness Program: Plants-2-Plate
Other
Lead sponsor
The University of Texas Health Science Center at San Antonio
Other
Eligibility
18 Years and older
Enrollment
47 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Mar 20, 2024 · Synced Sep 3, 2026, 4:18 PM EDT
Recruiting Not applicable Interventional

Feasibility and Acceptibility of a Multi-site Trial of Time Restircted Eating During Chemotheraply for Breast Cancer.

NCT07387445
View directory record Official record
Conditions
Breast Cancer Early Stage Breast Cancer (Stage 1-3), Breast Neoplasm Female, Breast Cancer
Interventions
Time restricted eating
Behavioral
Lead sponsor
University of Illinois at Chicago
Other
Eligibility
25 Years to 99 Years · Female only
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
2
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Apr 30, 2026 · Synced Sep 3, 2026, 4:18 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Time Restricted Eating With or Without a Fiber Supplement for Weight Management in Pediatric Cancer Survivors

NCT05826184
View directory record Official record
Conditions
Weight, Body
Interventions
Time restircted eating, Time restricted eating + prebiotic
Behavioral
Lead sponsor
University of Illinois at Chicago
Other
Eligibility
18 Years to 39 Years
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Oct 2, 2025 · Synced Sep 3, 2026, 4:18 PM EDT
Completed Not applicable Interventional Results available

Pharmacokinetic and Subjective Effects of Heated Tobacco Products

NCT06356610
View directory record Official record
Conditions
Tobacco Use
Interventions
Product A, Product B, Product C, Product D, Product E, Product F
Other
Lead sponsor
Altria Client Services LLC
Industry
Eligibility
22 Years to 65 Years
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024
U.S. locations
3
States / cities
Lexington, Kentucky • Springfield, Missouri • Knoxville, Tennessee
Source: ClinicalTrials.gov public record
Updated Mar 26, 2026 · Synced Sep 3, 2026, 4:18 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

CALERIE: Comprehensive Assessment of Long-Term Effects of Reducing Intake of Energy

NCT00427193
View directory record Official record
Conditions
Aging
Interventions
Caloric Restriction (CR), Control
Behavioral
Lead sponsor
Duke University
Other
Eligibility
21 Years to 50 Years
Enrollment
238 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2012
U.S. locations
3
States / cities
Baton Rouge, Louisiana • Boston, Massachusetts • St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Mar 15, 2022 · Synced Sep 3, 2026, 4:18 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 6, 2026 · Synced Sep 3, 2026, 4:18 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Building Research for Intervention Development in Gliosis and Eating Habits

NCT06870578
View directory record Official record
Conditions
Gliosis, Child Obesity, Eating
Interventions
Diet modification
Other
Lead sponsor
University of Washington
Other
Eligibility
9 Years and older
Enrollment
75 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2029
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jun 5, 2025 · Synced Sep 3, 2026, 4:18 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Paleo Diet 8wk Feasibility in Overweight Adults

NCT03814473
View directory record Official record
Conditions
Overweight and Obesity
Interventions
Diet
Other
Lead sponsor
University of Houston
Other
Eligibility
18 Years to 55 Years
Enrollment
21 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015
U.S. locations
2
States / cities
Pittsburgh, Pennsylvania • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jan 23, 2019 · Synced Sep 3, 2026, 4:18 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 3, 2026, 4:18 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 2, 2008 · Synced Sep 3, 2026, 4:18 PM EDT
Completed Not applicable Interventional

Calorie Restriction and Brain Function in Mild Cognitive Impairment

NCT03872375
View directory record Official record
Conditions
Mild Cognitive Impairment
Interventions
Meal-Replacement Therapy, Dietary Counseling
Dietary Supplement · Behavioral
Lead sponsor
Iowa State University
Other
Eligibility
70 Years to 85 Years
Enrollment
96 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
2
States / cities
Ames, Iowa • Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Mar 30, 2022 · Synced Sep 3, 2026, 4:18 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Infant Nutrition and Brain Development

NCT03111927
View directory record Official record
Conditions
Healthy, Infant Development
Interventions
Infant Formula: enriched level of myelin-relevant nutrients, Infant formula: standard level of myelin-relevant nutrients
Other
Lead sponsor
Société des Produits Nestlé (SPN)
Industry
Eligibility
2 Weeks to 6 Weeks
Enrollment
189 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2022
U.S. locations
2
States / cities
Baton Rouge, Louisiana • Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Jul 20, 2022 · Synced Sep 3, 2026, 4:18 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Experimental Approach to Test Predictions of Body Weight Regulation Models

NCT06309576
View directory record Official record
Conditions
Obesity, Underweight
Interventions
Fasting-refeeding cycle
Behavioral
Lead sponsor
Pennington Biomedical Research Center
Other
Eligibility
18 Years to 40 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Baton Rouge, Louisiana
Source: ClinicalTrials.gov public record
Updated May 28, 2026 · Synced Sep 3, 2026, 4:18 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Glycomacropeptide and Women's Health

NCT05551091
View directory record Official record
Conditions
Obesity
Interventions
glycomacropeptide (GMP)
Dietary Supplement
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
Up to 90 Years · Female only
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2022
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Oct 2, 2022 · Synced Sep 3, 2026, 4:18 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Feeding Intervention for Infants With Crying

NCT01017991
View directory record Official record
Conditions
Crying
Interventions
Milk based infant formula with probiotic, Milk based infant formula
Other
Lead sponsor
Société des Produits Nestlé (SPN)
Industry
Eligibility
3 Weeks to 4 Months
Enrollment
65 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2013
U.S. locations
9
States / cities
Bentonville, Arkansas • San Francisco, California • Washington D.C., District of Columbia + 6 more
Source: ClinicalTrials.gov public record
Updated Nov 16, 2017 · Synced Sep 3, 2026, 4:18 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

DiAL Health Research Study

NCT05549362
View directory record Official record
Conditions
Aging, Weight Loss, Treatment Adherence
Interventions
Dial Health Research Study
Other
Lead sponsor
Pennington Biomedical Research Center
Other
Eligibility
25 Years to 45 Years
Enrollment
90 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2025
U.S. locations
2
States / cities
Birmingham, Alabama • Baton Rouge, Louisiana
Source: ClinicalTrials.gov public record
Updated Mar 11, 2025 · Synced Sep 3, 2026, 4:18 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 24, 2024 · Synced Sep 3, 2026, 4:18 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Fasting and Shifted Timing (FAST) of Eating Study

NCT04527952
View directory record Official record
Conditions
Overweight and Obesity
Interventions
Online handouts describing how to follow each diet for 1 week each
Behavioral
Lead sponsor
University of South Carolina
Other
Eligibility
18 Years and older
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Columbia, South Carolina
Source: ClinicalTrials.gov public record
Updated Apr 27, 2021 · Synced Sep 3, 2026, 4:18 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 26, 2026 · Synced Sep 3, 2026, 4:18 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 22, 2026 · Synced Sep 3, 2026, 4:18 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Behavior of Infants Fed Formula Supplemented With Prebiotics

NCT02757924
View directory record Official record
Conditions
Gastrointestinal Tolerance
Interventions
Infant formula supplemented with prebiotics
Other
Lead sponsor
Abbott Nutrition
Industry
Eligibility
7 Days to 42 Days
Enrollment
59 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
11
States / cities
Dothan, Alabama • Pensacola, Florida • St. Petersburg, Florida + 8 more
Source: ClinicalTrials.gov public record
Updated Jun 18, 2017 · Synced Sep 3, 2026, 4:18 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 11, 2018 · Synced Sep 3, 2026, 4:18 PM EDT