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ClinicalTrials.gov public records Last synced Oct 5, 2026, 9:46 AM EDT

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Showing 25–48 of 361 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: High carbohydrate diet Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Lean Body Mass Response to Higher-protein Diets During Winter Military Training

NCT02327208
View directory record Official record
Conditions
Body Weight
Interventions
Control, Protein, Carbohydrate
Dietary Supplement
Lead sponsor
United States Army Research Institute of Environmental Medicine
Federal
Eligibility
18 Years and older
Enrollment
73 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015
U.S. locations
1
States / cities
Natick, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 21, 2017 · Synced Oct 5, 2026, 9:46 AM EDT
Completed Not applicable Interventional

Breakfast Intake and Satiety Hormones

NCT02497859
View directory record Official record
Conditions
Obesity
Interventions
Egg Breakfast (EB), Cereal Breakfast (CB), Weight Loss Counseling, Weight Loss Diet
Behavioral
Lead sponsor
Texas Tech University
Other
Eligibility
18 Years to 44 Years · Female only
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
1
States / cities
Lubbock, Texas
Source: ClinicalTrials.gov public record
Updated Sep 16, 2016 · Synced Oct 5, 2026, 9:46 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

The Beneficial Effects of Healthy Snacks on Appetite Control, Satiety, and Reward-driven Eating Behavior in Young People

NCT01781286
View directory record Official record
Conditions
Obesity
Interventions
High Protein, Low Protein
Behavioral
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
13 Years to 19 Years
Enrollment
37 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated Jul 23, 2018 · Synced Oct 5, 2026, 9:46 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Higher Protein Diet and Exercise for Optimal Weight Loss in Elderly Women

NCT00912210
View directory record Official record
Conditions
Bone and Body Composition, Obesity, Metabolic Syndrome, Physical Function, Quality of Life
Interventions
Whey protein isolate, Maltodextrin powder supplement
Dietary Supplement
Lead sponsor
University of Illinois at Urbana-Champaign
Other
Eligibility
60 Years to 80 Years · Female only
Enrollment
31 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2009
U.S. locations
1
States / cities
Urbana, Illinois
Source: ClinicalTrials.gov public record
Updated Jun 3, 2009 · Synced Oct 5, 2026, 9:46 AM EDT
Recruiting Phase 2 Interventional

SMART Diets for MASLD

NCT07459504
View directory record Official record
Conditions
Metabolic-dysfunction Associated Steatotic Liver Disease
Interventions
Essential Amino Acids Supplementation intervention, Low sugar diet
Drug · Other
Lead sponsor
Michigan State University
Other
Eligibility
11 Years to 17 Years
Enrollment
102 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
1
States / cities
Grand Rapids, Michigan
Source: ClinicalTrials.gov public record
Updated Jun 1, 2026 · Synced Oct 5, 2026, 9:46 AM EDT
Completed No phase listed Observational

Evaluation of Lipoproteins

NCT00001168
View directory record Official record
Conditions
Evaluation of Plasma Lipoproteins
Interventions
Balanced diet
Behavioral
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
2 Years to 99 Years
Enrollment
1,017 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 1979
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 18, 2026 · Synced Oct 5, 2026, 9:46 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Highly Processed Foods and Vascular Health

NCT05628350
View directory record Official record
Conditions
Cardiovascular Diseases
Interventions
No UPF controlled diet, High UPF controlled diet
Other
Lead sponsor
Virginia Polytechnic Institute and State University
Other
Eligibility
40 Years to 65 Years
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
Blacksburg, Virginia
Source: ClinicalTrials.gov public record
Updated Jan 22, 2026 · Synced Oct 5, 2026, 9:46 AM EDT
Active, not recruiting Phase 2 Interventional

A Pilot Study of Ketogenic Diet and Metformin in Glioblastoma: Feasibility and Metabolic Imaging

NCT04691960
View directory record Official record
Conditions
Glioblastoma
Interventions
Ketogenic Diet, Metformin
Other · Drug
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
18 Years and older
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2026
U.S. locations
2
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Dec 19, 2025 · Synced Oct 5, 2026, 9:46 AM EDT
Completed Phase 4 Interventional

Effects of Glucosamine and Chondroitin Supplementation in Women With Knee Osteoarthritis Participating in an Exercise and Weight Loss Program

NCT01271218
View directory record Official record
Conditions
Knee Osteoarthritis
Interventions
Diet, Exercise
Other
Lead sponsor
Texas A&M University
Other
Eligibility
18 Years to 70 Years · Female only
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2006
U.S. locations
1
States / cities
College Station, Texas
Source: ClinicalTrials.gov public record
Updated Jan 6, 2011 · Synced Oct 5, 2026, 9:46 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Carbohydrates and Related Biomarkers

NCT00622661
View directory record Official record
Conditions
Healthy, Overweight
Interventions
Low Glycemic Load Diet, High Glycemic Load Diet
Other
Lead sponsor
Fred Hutchinson Cancer Center
Other
Eligibility
18 Years to 45 Years
Enrollment
89 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2010
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jan 5, 2012 · Synced Oct 5, 2026, 9:46 AM EDT
Completed Phase 2 Interventional

Paxalisib With a High Fat, Low Carb Diet and Metformin for Glioblastoma

NCT05183204
View directory record Official record
Conditions
Glioblastoma
Interventions
Paxalisib, Metformin, Ketogenic Diet
Drug · Other
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
18 Years and older
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Sep 25, 2026 · Synced Oct 5, 2026, 9:46 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Lowering Caloric Density of the Diet

NCT02674971
View directory record Official record
Conditions
Obesity, Feeding Behavior
Interventions
Common components of intervention
Behavioral
Lead sponsor
The University of Tennessee, Knoxville
Other
Eligibility
18 Years to 65 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2025
U.S. locations
1
States / cities
Knoxville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jun 9, 2026 · Synced Oct 5, 2026, 9:46 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Ultra-processed Food Consumption, Gut Microbiota, and Glucose Homeostasis

NCT05358171
View directory record Official record
Conditions
Insulin Sensitivity, 24-hour Glucose Control
Interventions
HIgh UPF controlled diet, No UPF controlled diet
Other
Lead sponsor
Virginia Polytechnic Institute and State University
Other
Eligibility
40 Years to 65 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
Blacksburg, Virginia
Source: ClinicalTrials.gov public record
Updated Jan 14, 2026 · Synced Oct 5, 2026, 9:46 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Dietary Flavonoids on Intestinal Microbiota, Intestinal Inflammation and Metabolic Syndrome

NCT02728570
View directory record Official record
Conditions
Metabolic Syndrome X, Inflammation
Interventions
High Dietary Flavonoids, Low Dietary Flavonoids
Other
Lead sponsor
Utah State University
Other
Eligibility
18 Years to 70 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2015
U.S. locations
1
States / cities
Logan, Utah
Source: ClinicalTrials.gov public record
Updated Apr 15, 2016 · Synced Oct 5, 2026, 9:46 AM EDT
Completed Phase 2 Interventional

Examining the Effects of Diet on Health With an Online Program

NCT01967992
View directory record Official record
Conditions
Type 2 Diabetes
Interventions
Behavioral: Low Carbohydrate, Ketogenic Diet, American Diabetes Association Diet, Mindfulness and Positive Affect Skills
Behavioral
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years to 100 Years
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Oct 14, 2015 · Synced Oct 5, 2026, 9:46 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

FB4 (Framingham, Boston, Bloomington, Birmingham, and Baylor)

NCT03394664
View directory record Official record
Conditions
Obesity
Interventions
Feeding Study
Behavioral
Lead sponsor
Boston Children's Hospital
Other
Eligibility
18 Years to 50 Years
Enrollment
166 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Ashland, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 18, 2021 · Synced Oct 5, 2026, 9:46 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Nutrition for Precision Health, Powered by the All of Us

NCT05701657
View directory record Official record
Conditions
Nutrition, Health, Dietary Habits
Interventions
Diet A, Diet B, Diet C
Other
Lead sponsor
RTI International
Other
Eligibility
18 Years and older
Enrollment
8,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
14
States / cities
Birmingham, Alabama • Davis, California • Los Angeles, California + 7 more
Source: ClinicalTrials.gov public record
Updated Sep 23, 2026 · Synced Oct 5, 2026, 9:46 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Low and Moderate Fat Diets on Lipids, Inflammation and Vascular Reactivity in the Metabolic Syndrome

NCT00362908
View directory record Official record
Conditions
Metabolic Syndrome X, Dyslipidemias
Interventions
Moderate Fat and Moderate Carbohydrate Diet, Low Fat and High Carbohydrate Diet
Behavioral
Lead sponsor
University of Washington
Other
Eligibility
30 Years to 75 Years
Enrollment
71 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2010
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Oct 28, 2010 · Synced Oct 5, 2026, 9:46 AM EDT
Not listed Not applicable Interventional

Effect of Diet on Gulf War Illness

NCT02881944
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
Low FODMAP Diet, High FODMAP Diet
Behavioral
Lead sponsor
Ashok Tuteja
Federal
Eligibility
25 Years to 90 Years
Enrollment
68 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Feb 1, 2018 · Synced Oct 5, 2026, 9:46 AM EDT
Active, not recruiting Not applicable Interventional

Evaluating the Influence of Diet-induced Weight Loss on Fat (Adipose) Tissue's Insulin Sensitivity and Testosterone Synthesis in Women With Overweight or Obesity, Insulin Resistance, and Hyperandrogenemia

NCT06998238
View directory record Official record
Conditions
Overweight and Obesity, Hyperandrogenemia, Insulin Resistance
Interventions
Mediterranean-based, carbohydrate restricted, calorie reduced diet
Behavioral
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
21 Years to 45 Years · Female only
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated Mar 17, 2026 · Synced Oct 5, 2026, 9:46 AM EDT
Completed Not applicable Interventional Results available

Therapeutic Diets in Alzheimer's Disease

NCT03860792
View directory record Official record
Conditions
Alzheimer Disease
Interventions
Ketogenic Diet, Therapeutic Lifestyles Changes Diet
Behavioral
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
50 Years to 90 Years
Enrollment
84 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2025
U.S. locations
1
States / cities
Fairway, Kansas
Source: ClinicalTrials.gov public record
Updated Sep 8, 2026 · Synced Oct 5, 2026, 9:46 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

The Effects of Added Sugar Intake on Brain Blood Flow and Hippocampal Function in Midlife Adults

NCT05211726
View directory record Official record
Conditions
Aging, Healthy Diet
Interventions
Low Added Sugar Diet, High Added Sugar Diet
Other
Lead sponsor
University of Delaware
Other
Eligibility
50 Years to 64 Years
Enrollment
44 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Newark, Delaware
Source: ClinicalTrials.gov public record
Updated Jun 12, 2025 · Synced Oct 5, 2026, 9:46 AM EDT
Not listed Phase 3 Interventional Accepts healthy volunteers

Dissemination of a Tailored Tobacco Quitline for Rural Veteran Smokers

NCT01892813
View directory record Official record
Conditions
Nicotine Dependence, Tobacco Use
Interventions
Nicotine replacement therapy - Transdermal nicotine patch, Nicotine replacement therapy - Nicotine gum, Nicotine replacement therapy - Nicotine lozenge, Bupropion, Varenicline, Combination pharmacotherapy - Transdermal nicotine patch + nicotine gum, Combination pharmacotherapy - Transdermal nicotine patch + nicotine lozenge, Combination pharmacotherapy - Transdermal nicotine patch + bupropion, Tobacco quitline referral, Tailored behavioral intervention, Alcohol use risk reduction, Behavioral activation for depressive symptoms, Behavioral management of postcessation weight gain
Drug · Behavioral
Lead sponsor
Mark Vander Weg
Other
Eligibility
18 Years to 99 Years
Enrollment
411 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2018
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Jul 11, 2017 · Synced Oct 5, 2026, 9:46 AM EDT
Terminated No phase listed Observational

The Effect of Ketogenic Dietary Therapy on Sleep in Adult Epilepsy

NCT04193891
View directory record Official record
Conditions
Epilepsy, Seizures
Interventions
Modified Atkins Diet
Other
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years to 89 Years
Enrollment
2 participants
Timeline
2020
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Aug 14, 2025 · Synced Oct 5, 2026, 9:46 AM EDT