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ClinicalTrials.gov public records Last synced Sep 9, 2026, 11:24 AM EDT

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Showing 1–24 of 129 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Low-Carbohydrate/Higher Fat Diet Clear all
Recruiting Not applicable Interventional Accepts healthy volunteers

Food and Circadian Timing

NCT04743271
View directory record Official record
Conditions
Diet, High-Fat, Circadian Rhythm
Interventions
High-Fat Diet, Low-Fat Diet
Other
Lead sponsor
Oregon Health and Science University
Other
Eligibility
18 Years to 40 Years
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2026
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Nov 9, 2025 · Synced Sep 9, 2026, 11:24 AM EDT
Completed Not applicable Interventional

Fully Remote, Telehealth-based Ketogenic Metabolic Therapy for Long COVID

NCT07745699
View directory record Official record
Conditions
Long COVID Fatigue
Interventions
Ketogenic Metabolic Therapy, Lifestyle Intervention
Other · Behavioral
Lead sponsor
National University of Natural Medicine
Other
Eligibility
18 Years and older
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Aug 5, 2026 · Synced Sep 9, 2026, 11:24 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Dietary Oxalate and Innate Immunity in Kidney Stone Disease

NCT04051346
View directory record Official record
Conditions
Kidney Stone
Interventions
Low Oxalate Diet, High Oxalate Diet
Dietary Supplement
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years to 60 Years
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2025
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Jun 25, 2026 · Synced Sep 9, 2026, 11:24 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Biobehavioral Impact of Diet Quality on Affect and Craving

NCT04105712
View directory record Official record
Conditions
Food Addiction, Withdrawal
Interventions
Dietary Change (low in highly processed foods)
Behavioral
Lead sponsor
University of Michigan
Other
Eligibility
25 Years to 40 Years
Enrollment
68 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Oct 31, 2021 · Synced Sep 9, 2026, 11:24 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Metabolic Fuels Study

NCT02235038
View directory record Official record
Conditions
Obesity
Interventions
Low carbohydrate diet, Moderate carbohydrate diet, High carbohydrate diet
Behavioral
Lead sponsor
Boston Children's Hospital
Other
Eligibility
18 Years to 65 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2017
U.S. locations
4
States / cities
Boston, Massachusetts • Framingham, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 20, 2017 · Synced Sep 9, 2026, 11:24 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Energy Dense Fueling for Cold-Weather Operations

NCT07489690
View directory record Official record
Conditions
Cold Exposure
Interventions
High Fat, High Carbohydrate
Dietary Supplement
Lead sponsor
United States Army Research Institute of Environmental Medicine
Federal
Eligibility
18 Years to 39 Years
Enrollment
8 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
Natick, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 23, 2026 · Synced Sep 9, 2026, 11:24 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Characterization of Bile Acid Pathway in Obesity

NCT03341052
View directory record Official record
Conditions
Obesity
Interventions
Normal Diet, High Fat Diet, Low Fat Diet
Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 65 Years
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2021
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Apr 26, 2023 · Synced Sep 9, 2026, 11:24 AM EDT
Completed Not applicable Interventional

Ketogenic Diet Following Moderate to Severe Pediatric Traumatic Brain Injury

NCT04933448
View directory record Official record
Conditions
Traumatic Brain Injury
Interventions
Ketogenic Diet
Other
Lead sponsor
Gillette Children's Specialty Healthcare
Other
Eligibility
2 Years to 17 Years
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
2
States / cities
Minneapolis, Minnesota • Saint Paul, Minnesota
Source: ClinicalTrials.gov public record
Updated Feb 11, 2026 · Synced Sep 9, 2026, 11:24 AM EDT
Withdrawn Not applicable Interventional

The KetoGlioma (Ketogenic Glioma) Study

NCT05373381
View directory record Official record
Conditions
Glioma
Interventions
Supplemental High Fat Low Carbohydrate (sHFLC) + KetoPhyt
Dietary Supplement
Lead sponsor
Tufts Medical Center
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 1, 2024 · Synced Sep 9, 2026, 11:24 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Lipoprotein Effects of Substituting Beef Protein for Carbohydrate

NCT00852267
View directory record Official record
Conditions
Healthy, Cardiovascular Disease, Atherogenic Dyslipidemia
Interventions
High Carbohydrate, High Saturated Fat Diet, Low Carbohydrate, High Saturated Fat Diet, Low Carbohydrate, Low Saturated Fat Diet
Other
Lead sponsor
UCSF Benioff Children's Hospital Oakland
Other
Eligibility
18 Years and older · Male only
Enrollment
67 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
1
States / cities
Berkeley, California
Source: ClinicalTrials.gov public record
Updated Dec 23, 2020 · Synced Sep 9, 2026, 11:24 AM EDT
Completed Not applicable Interventional Results available

Brain Energy for Amyloid Transformation in Alzheimer's Disease Study

NCT03472664
View directory record Official record
Conditions
Alzheimer Disease, Mild Cognitive Impairment
Interventions
low carbohydrate/high fat diet, low fat/high carbohydrate diet
Other
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
55 Years to 85 Years
Enrollment
84 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2024
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 2, 2026 · Synced Sep 9, 2026, 11:24 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Small Extracellular Vesicles and Insulin Action

NCT05933707
View directory record Official record
Conditions
Obesity, Insulin Resistance, Metabolically Healthy Obesity, Obesity, Metabolically Benign
Interventions
People with Metabolically Unhealthy Obesity - Low Calorie Diet
Behavioral
Lead sponsor
Washington University School of Medicine
Other
Eligibility
25 Years to 55 Years
Enrollment
72 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2028
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jul 16, 2026 · Synced Sep 9, 2026, 11:24 AM EDT
Completed No phase listed Observational

Positron Emission Tomography for the Diagnosis of Immune Checkpoint Inhibitor-Related Myocarditis

NCT05062395
View directory record Official record
Conditions
Myocarditis Acute
Interventions
Computed Tomography, Fludeoxyglucose F-18, Low Carbohydrate High Fat Diet, Positron Emission Tomography
Procedure · Other
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Apr 9, 2023 · Synced Sep 9, 2026, 11:24 AM EDT
Completed No phase listed Observational

Utilization of the Ketogenic Diet in Patient With Relapsing Remitting MS

NCT03718247
View directory record Official record
Conditions
Relapsing Remitting Multiple Sclerosis
Interventions
Modified Atkins diet
Other
Lead sponsor
University of Virginia
Other
Eligibility
12 Years to 55 Years
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated May 17, 2022 · Synced Sep 9, 2026, 11:24 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Impact of Exogenous Ketones on Indices of Keto-Adaptation in Obese Subjects on Weight Reducing Diets.

NCT06449287
View directory record Official record
Conditions
Ketogenic Diet, Weight Loss
Interventions
Diet, Blood Draw, Ketone/Glucose Monitoring, Body Composition, Urine Analysis, Neuropsychological Measures - ANAM
Other · Biological · Behavioral
Lead sponsor
Ohio State University
Other
Eligibility
21 Years to 65 Years
Enrollment
37 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Dec 18, 2024 · Synced Sep 9, 2026, 11:24 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Ketogenic Diet in Healthy Adults With Differing BMI

NCT06515912
View directory record Official record
Conditions
Cardiovascular Diseases
Interventions
Ketogenic Diet
Other
Lead sponsor
Penn State University
Other
Eligibility
25 Years to 45 Years
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
University Park, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 14, 2026 · Synced Sep 9, 2026, 11:24 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Comparison of Popular Weight Loss Diets

NCT00079573
View directory record Official record
Conditions
Obesity
Interventions
Atkins diet (extremely low carbohydrate), Zone diet (low carbohydrate, high protein), Ornish diet (very low fat)
Behavioral
Lead sponsor
National Center for Complementary and Integrative Health (NCCIH)
NIH
Eligibility
30 Years to 50 Years · Female only
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2002 – 2004
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Aug 17, 2006 · Synced Sep 9, 2026, 11:24 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Precision Nutrition and Metabolic Function

NCT04131166
View directory record Official record
Conditions
Obesity, Insulin Resistance
Interventions
Mediterranean diet, Low-carbohydrate, ketogenic diet, Low-fat diet, Annual follow-up testing for 5 years
Behavioral · Other
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 55 Years
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2029
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jul 5, 2026 · Synced Sep 9, 2026, 11:24 AM EDT
Completed Not applicable Interventional Results available

Dietary Glycemic Index, Brain Function and Food Intake in Patients With Type 1 Diabetes Mellitus

NCT02772783
View directory record Official record
Conditions
Diabetes Mellitus, Type 1
Interventions
high GI meal, low GI meal, euglycemic insulin clamp, primed-variable insulin infusion
Other · Drug
Lead sponsor
Boston Children's Hospital
Other
Eligibility
18 Years to 45 Years · Male only
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 17, 2021 · Synced Sep 9, 2026, 11:24 AM EDT
Terminated Not applicable Interventional

Evaluating Dietary Intervention Before surgicaL Treatment for Epilepsy

NCT02261753
View directory record Official record
Conditions
Cortical Dysplasia
Interventions
Classical ketogenic diet
Dietary Supplement
Lead sponsor
University College, London
Other
Eligibility
3 Years to 15 Years
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 24, 2017 · Synced Sep 9, 2026, 11:24 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Clinical Trial to Assess the Effects of Dairy on Insulin Sensitivity and β-Cell Function

NCT01936935
View directory record Official record
Conditions
Diabetes
Interventions
Low-fat dairy, Sugar-sweetened beverages
Other
Lead sponsor
Provident Clinical Research
Other
Eligibility
18 Years to 74 Years
Enrollment
44 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
1
States / cities
Addison, Illinois
Source: ClinicalTrials.gov public record
Updated Dec 3, 2023 · Synced Sep 9, 2026, 11:24 AM EDT
Completed Not applicable Interventional Results available

Effect of Low Carbohydrate Versus Low Fat Diet in the Treatment of Dyslipidemia in Obese Children With Metabolic Syndrome

NCT03937960
View directory record Official record
Conditions
Metabolic Syndrome, Obesity, Dyslipidemias
Interventions
Carbohydrate restricted group, Standard low fat diet
Other
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
10 Years to 18 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
2
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Dec 21, 2022 · Synced Sep 9, 2026, 11:24 AM EDT
Completed Not applicable Interventional

Exercise and Nutrition on Obese Microbiome

NCT04138303
View directory record Official record
Conditions
Overweight and Obesity
Interventions
Exercise Protocol, Calorie-Restrictive Low Carbohydrate Diet (CR-LC), Ancestral Diet (AD)
Other
Lead sponsor
University of Miami
Other
Eligibility
18 Years to 65 Years
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Jan 6, 2020 · Synced Sep 9, 2026, 11:24 AM EDT
Completed Not applicable Interventional Results available

Targeting Obesity to Optimize Health in Cardiac Rehab (TOPCARE)

NCT03423238
View directory record Official record
Conditions
Obesity, Weight Loss, CHD - Coronary Heart Disease
Interventions
Exercise, Health Education, Exercise Compliance, Calorie-Restricted Diet, Behavioral Modification, Weight-Loss Compliance, Dietary Counseling
Other · Behavioral · Dietary Supplement
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
40 Years and older
Enrollment
38 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Nov 22, 2021 · Synced Sep 9, 2026, 11:24 AM EDT