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ClinicalTrials.gov public records Last synced Oct 25, 2026, 5:24 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 1–24 of 131 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Diet composition 1 Clear all
Recruiting Not applicable Interventional

Effects of Ketosis on Brain Function in Patients With T1DM

NCT04219709
View directory record Official record
Conditions
Type1diabetes
Interventions
Very low carbohydrate diet, Standard carbohydrate diet
Other
Lead sponsor
Boston Children's Hospital
Other
Eligibility
18 Years to 40 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2026
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 18, 2024 · Synced Oct 25, 2026, 5:24 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Effects of Graded Protein Intake on Body Composition in Older Adults

NCT04845282
View directory record Official record
Conditions
Sarcopenia
Interventions
Graded Protein plus Resistance Training, RDA Protein plus Resistance Training
Dietary Supplement
Lead sponsor
Wake Forest University
Other
Eligibility
55 Years to 110 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 27, 2022 · Synced Oct 25, 2026, 5:24 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Glycemic Load & Resistance Training on Endothelial Function & Insulin Sensitivity

NCT01755962
View directory record Official record
Conditions
160 Participants Aged 18-35 Years and Obese (BMI ≥30) Open to Men and Women of All Ethnicity
Interventions
Glycemic Load, Resistance Training
Other
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years to 35 Years
Enrollment
88 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2017
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Nov 16, 2020 · Synced Oct 25, 2026, 5:24 AM 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, 5:24 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Practicality of Intermittent Fasting and Its Effect on Markers of Aging and Oxidative Stress

NCT02132091
View directory record Official record
Conditions
Aging, Metabolism
Interventions
Intermittent Fasting, 400 IU Vitamin E, 1000 mg Vitamin C
Other · Dietary Supplement
Lead sponsor
University of Florida
Other
Eligibility
19 Years to 30 Years
Enrollment
37 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Dec 14, 2015 · Synced Oct 25, 2026, 5:24 AM EDT
Completed No phase listed Observational

Clinical Outcomes, Nutritional Status, Exercise and Psychosocial Factors in Pediatric Hematopoietic Cell Transplant

NCT02734797
View directory record Official record
Conditions
Malnutrition, Obesity
Interventions
Not listed
Lead sponsor
University of Michigan Rogel Cancer Center
Other
Eligibility
2 Years to 25 Years
Enrollment
55 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Jan 25, 2024 · Synced Oct 25, 2026, 5:24 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Low Sugar Protein Pacing, Intermittent Fasting Diet in Men and Women

NCT04327141
View directory record Official record
Conditions
Weight Loss, Gut Microbiome, Anti-Aging
Interventions
P-IF, HH
Behavioral
Lead sponsor
Skidmore College
Other
Eligibility
25 Years to 65 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2024
U.S. locations
1
States / cities
Saratoga Springs, New York
Source: ClinicalTrials.gov public record
Updated Apr 8, 2024 · Synced Oct 25, 2026, 5:24 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Exercise Training and Time-restricted Feeding in Overweight and Obese Adults

NCT03823872
View directory record Official record
Conditions
Overweight and Obesity, Weight Loss
Interventions
Time restricted feeding, Normal feeding
Other
Lead sponsor
Kyle Hackney
Other
Eligibility
35 Years to 60 Years
Enrollment
21 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Fargo, North Dakota
Source: ClinicalTrials.gov public record
Updated Aug 25, 2020 · Synced Oct 25, 2026, 5:24 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Enhancing Adaptations to Exercise

NCT03350906
View directory record Official record
Conditions
Inflammation
Interventions
n3-PUFA, Placebo, Biopsy, Body Composition Scan
Drug · Procedure · Diagnostic Test
Lead sponsor
Mayo Clinic
Other
Eligibility
20 Years to 85 Years
Enrollment
63 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2021
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Nov 14, 2023 · Synced Oct 25, 2026, 5:24 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Flavored, Carbonated Drinks on Salivary Flow, Salivary Composition, and Taste Perceptions

NCT06933290
View directory record Official record
Conditions
Taste Perception, Saliva Production
Interventions
Beverage
Other
Lead sponsor
PepsiCo Global R&D
Industry
Eligibility
18 Years to 45 Years
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Valhalla, New York
Source: ClinicalTrials.gov public record
Updated Jun 30, 2026 · Synced Oct 25, 2026, 5:24 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Fat Malabsorption in Chronic Pancreatitis

NCT02849704
View directory record Official record
Conditions
Chronic Pancreatitis
Interventions
Creon36™
Drug
Lead sponsor
Children's Hospital of Philadelphia
Other
Eligibility
30 Years to 70 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 3, 2019 · Synced Oct 25, 2026, 5:24 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Medium Chain Triglyceride Oil, Versus Olive Oil, for Weight Loss

NCT00529919
View directory record Official record
Conditions
Overweight
Interventions
Weight loss
Dietary Supplement
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
19 Years to 50 Years
Enrollment
53 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2007
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Sep 14, 2007 · Synced Oct 25, 2026, 5:24 AM EDT
Completed Not applicable Interventional

An Enhanced Protein (Dairy) Weight Loss Intervention for Dynapenic Obesity: Impact on Muscle Quality and Composition

NCT02437643
View directory record Official record
Conditions
Dynapenia, Obesity
Interventions
Weight Loss, Dairy Protein, Low intensity exercise
Behavioral · Dietary Supplement
Lead sponsor
Duke University
Other
Eligibility
60 Years and older
Enrollment
81 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Nov 7, 2018 · Synced Oct 25, 2026, 5:24 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of a 4-week Alternate Day Intermittent Energy Restriction Intervention vs Reduced

NCT05213520
View directory record Official record
Conditions
Obesity
Interventions
Alternate Day Intermittent Energy Restriction, Reduced Calorie Diet
Other
Lead sponsor
Texas Tech University
Other
Eligibility
18 Years to 25 Years
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
2
States / cities
Lubbock, Texas
Source: ClinicalTrials.gov public record
Updated May 6, 2023 · Synced Oct 25, 2026, 5:24 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

A Pilot Study to Determine Nutrition Status in Glioblastoma Multiforme Patients

NCT01770626
View directory record Official record
Conditions
Brain Cancer
Interventions
Nutrition
Other
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
19 Years and older
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2014
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Oct 28, 2014 · Synced Oct 25, 2026, 5:24 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

FIT-COACH: Fitbit Intervention With Coordinated Health Coaching and PCP Support

NCT06915090
View directory record Official record
Conditions
GLP - 1, Diabetes, Obesity and Obesity-related Medical Conditions, Cardiovascular Diseases
Interventions
Health Coach/Fitbit
Behavioral
Lead sponsor
University of Massachusetts, Worcester
Other
Eligibility
18 Years to 100 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Worcester, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 18, 2025 · Synced Oct 25, 2026, 5:24 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Variability In Mixed Meal Tests: Fixed Versus Adjusted to Energy Needs Caloric Dose

NCT06223555
View directory record Official record
Conditions
Obesity, Healthy Volunteer
Interventions
Fixed Mixed Meal Test, Adjusted Mixed Meal Test
Other
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
18 Years to 99 Years
Enrollment
79 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2027
U.S. locations
1
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated Sep 21, 2026 · Synced Oct 25, 2026, 5:24 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Improving Self-Efficacy, Resolving Inflammaging Allo HSCT Survivors in Personal Training

NCT03609203
View directory record Official record
Conditions
Allogeneic HCT Survivors
Interventions
10 Weeks of Strength Trailing, Group Nutrition Discussion: week 1, week 5 and week 10
Other
Lead sponsor
Masonic Cancer Center, University of Minnesota
Other
Eligibility
18 Years and older
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2021
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Apr 4, 2022 · Synced Oct 25, 2026, 5:24 AM EDT
Recruiting Not applicable Interventional

Very Low Carbohydrate Diets and Glucagon Response in T1DM

NCT04200391
View directory record Official record
Conditions
Type1diabetes
Interventions
Very low carbohydrate diet
Other
Lead sponsor
Boston Children's Hospital
Other
Eligibility
18 Years to 40 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2026
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 18, 2024 · Synced Oct 25, 2026, 5:24 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Reducing Obesity and Cartilage Compression in Knees

NCT04730557
View directory record Official record
Conditions
Obesity, Osteoarthritis, Knee Osteoarthritis
Interventions
Weight Loss
Behavioral
Lead sponsor
Duke University
Other
Eligibility
18 Years to 45 Years
Enrollment
88 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2024
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 6, 2024 · Synced Oct 25, 2026, 5:24 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Tissue Partitioning in Early Childhood

NCT01041794
View directory record Official record
Conditions
Changes in Bone Mineral Content, Changes in Bone Marrow Adipose Tissue
Interventions
Not listed
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
3 Years to 7 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2011
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Nov 25, 2019 · Synced Oct 25, 2026, 5:24 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Macronutrient Distribution and Plasma Metabolites to Model Meals Composition

NCT04928872
View directory record Official record
Conditions
Glucose Metabolism
Interventions
Predefined meal
Combination Product
Lead sponsor
Texas A&M University
Other
Eligibility
60 Years to 85 Years
Enrollment
23 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
College Station, Texas
Source: ClinicalTrials.gov public record
Updated Feb 21, 2022 · Synced Oct 25, 2026, 5:24 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Dietary Intervention and Varying Physical Activity in Seniors

NCT01893684
View directory record Official record
Conditions
Obesity
Interventions
Exercise, Higher Protein Diet, Conventional Carbohydrate Diet
Behavioral
Lead sponsor
University of Georgia
Other
Eligibility
65 Years to 80 Years · Female only
Enrollment
81 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2015
U.S. locations
1
States / cities
Athens, Georgia
Source: ClinicalTrials.gov public record
Updated Sep 7, 2017 · Synced Oct 25, 2026, 5:24 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Weight Loss Diet Study: Low Carb vs Low Fat

NCT01661426
View directory record Official record
Conditions
Obesity, Insulin Resistance
Interventions
Low-Carbohydrate Diet, Low-Fat Diet
Behavioral
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 50 Years
Enrollment
61 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Feb 22, 2023 · Synced Oct 25, 2026, 5:24 AM EDT