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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Low-carbohydrate diet Clear all
Completed Not applicable Interventional Accepts healthy volunteers Results available

Return of First-phase Insulin Secretion in Type 2 Diabetes is Associated With Depletion of Pancreas Lipid

NCT03430310
View directory record Official record
Conditions
Type 2 Diabetes Mellitus
Interventions
Low Glycemic Diet, Control Diet
Other
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
35 Years to 65 Years
Enrollment
65 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2023
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Oct 23, 2024 · Synced Sep 1, 2026, 2:57 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of a Very Low Carbohydrate Ketogenic Diet or Mediterranean Diet on Markers of Musculoskeletal Health in Older Adults

NCT06203392
View directory record Official record
Conditions
Aging, Musculoskeletal Diseases
Interventions
Very low carbohydrate ketogenic diet, Mediterranean diet
Other
Lead sponsor
University of Florida
Other
Eligibility
55 Years to 80 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Jan 27, 2026 · Synced Sep 1, 2026, 2:57 PM 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 1, 2026, 2:57 PM EDT
Completed Not applicable Interventional Results available

Smoking Treatment and Exercise Program for Underserved Populations (STEP UP)

NCT02873754
View directory record Official record
Conditions
Smoking
Interventions
Cognitive Behavioral Counseling, Mobile Contingency Management, Bupropion, Transdermal nicotine patch, Nicotine polacrilex, Nicotine lozenge
Behavioral · Drug
Lead sponsor
Duke University
Other
Eligibility
18 Years to 70 Years
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 12, 2018 · Synced Sep 1, 2026, 2:57 PM EDT
Withdrawn Not applicable Interventional

Mycobiome Supporting Diet to Reduce GI Toxicity Associated With ASCT

NCT04685525
View directory record Official record
Conditions
Autologous Transplant, Myeloma
Interventions
Mycobiome Supporting Diet
Behavioral
Lead sponsor
Case Comprehensive Cancer Center
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Apr 25, 2024 · Synced Sep 1, 2026, 2:57 PM EDT
Completed Phase 1Phase 2 Interventional

Dietary Intervention With the Modified Atkins Diet in Stroke Rehabilitation

NCT01820663
View directory record Official record
Conditions
Stroke, Ischemic Stroke
Interventions
Modified Atkins Diet, Control diet
Other
Lead sponsor
Burke Rehabilitation Hospital
Other
Eligibility
18 Years to 99 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
White Plains, New York
Source: ClinicalTrials.gov public record
Updated Feb 23, 2016 · Synced Sep 1, 2026, 2:57 PM EDT
Completed Not applicable Interventional

Effect of Changing Diet on Fasting and Post Fat Load Lipoproteins

NCT00593424
View directory record Official record
Conditions
Hypertriglyceridemia, Diabetes Mellitus
Interventions
Low Fat/High Carbohydrate, High Monounsaturated Fat/Low Carbohydrate
Other
Lead sponsor
University of Arkansas
Other
Eligibility
18 Years to 75 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2005
U.S. locations
1
States / cities
Little Rock, Arkansas
Source: ClinicalTrials.gov public record
Updated Sep 1, 2011 · Synced Sep 1, 2026, 2:57 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Evaluation of Abuse Liability of Very Low Nicotine (VLN) Mentholated Cigarettes

NCT03559725
View directory record Official record
Conditions
Tobacco Use
Interventions
VLN menthol cigarettes (A), Usual Brand Menthol Cigarettes (B), Nicotine gum (C)
Other · Drug
Lead sponsor
22nd Century Group, Inc.
Industry
Eligibility
22 Years to 65 Years
Enrollment
55 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Mar 24, 2020 · Synced Sep 1, 2026, 2:57 PM EDT
Not listed Not applicable Interventional

Treatment of Type 2 Diabetes With Ketogenic Diet

NCT03652649
View directory record Official record
Conditions
Type2 Diabetes Mellitus, Obesity
Interventions
3:1 ratio Ketogenic diet
Other
Lead sponsor
Mid-Atlantic Epilepsy and Sleep Center, LLC
Other
Eligibility
18 Years to 70 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 28, 2018 · Synced Sep 1, 2026, 2:57 PM EDT
Completed Not applicable Interventional

Comparison of Dietary Sugar Reduction Methods

NCT04186793
View directory record Official record
Conditions
Nonalcoholic Fatty Liver Disease
Interventions
Guided Grocery Shopping (GGS), Diet Provision Group
Behavioral · Other
Lead sponsor
Emory University
Other
Eligibility
8 Years to 16 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
2
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Mar 24, 2022 · Synced Sep 1, 2026, 2:57 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Potato Resistant Starch Intake on Insulin Sensitivity, Related Metabolic Markers and Satiety

NCT03689738
View directory record Official record
Conditions
Insulin Sensitivity, Lipid Metabolism, Resistant Starch, Potato
Interventions
Potato (Resistant Starch), CHO-matched (Low-fiber, RS-free)
Other
Lead sponsor
Midwest Center for Metabolic and Cardiovascular Research
Other
Eligibility
18 Years to 74 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Boca Raton, Florida
Source: ClinicalTrials.gov public record
Updated Jul 24, 2019 · Synced Sep 1, 2026, 2:57 PM EDT
Completed Not applicable Interventional

The Effects of Nutrition Supplementation and Education on the Healing of Diabetic Foot Ulcer (DFU)

NCT04055064
View directory record Official record
Conditions
Diabetic Foot Ulcer
Interventions
glucose control nutritional shake, nutrition education
Dietary Supplement
Lead sponsor
Florida State University
Other
Eligibility
30 Years to 70 Years
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Tallahassee, Florida
Source: ClinicalTrials.gov public record
Updated Aug 12, 2019 · Synced Sep 1, 2026, 2:57 PM EDT
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 1, 2026, 2:57 PM EDT
Terminated Not applicable Interventional

The Effects of a Low Carbohydrate, Non-Ketogenic Diet Versus Standard Diabetes Diet on Glycemic Control in Type 1 Diabetes

NCT03544892
View directory record Official record
Conditions
Diabetes Mellitus, Type 1
Interventions
Low carbohydrate diet, Standard of care diet
Other
Lead sponsor
University of Oklahoma
Other
Eligibility
18 Years to 30 Years
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Tulsa, Oklahoma
Source: ClinicalTrials.gov public record
Updated Jan 12, 2020 · Synced Sep 1, 2026, 2:57 PM EDT
Completed Not applicable Interventional Results available

Dietary Approaches to Stop Hypertension for Diabetes

NCT04286555
View directory record Official record
Conditions
Diabetes Mellitus, Type 2, Diabetes, Diabetes type2, Type2 Diabetes, Type 2 Diabetes, Type II Diabetes, Hypertension, High Blood Pressure
Interventions
DASH4D diet, comparison diet, higher sodium, lower sodium
Other
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years and older
Enrollment
105 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated May 12, 2026 · Synced Sep 1, 2026, 2:57 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Constipation Fiber Trial

NCT02193997
View directory record Official record
Conditions
Functional Constipation in Children
Interventions
Fiber, Placebo
Other
Lead sponsor
Warren Bishop
Other
Eligibility
2 Years to 16 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Sep 27, 2017 · Synced Sep 1, 2026, 2:57 PM EDT
Completed Not applicable Interventional

Reverse HFpEF: Ketogenic Reversal of Heart Failure With Preserved Ejection Fraction Study

NCT04942548
View directory record Official record
Conditions
Heart Failure
Interventions
Ketogenic Diet
Other
Lead sponsor
National Jewish Health
Other
Eligibility
21 Years to 80 Years
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
2
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated Apr 2, 2024 · Synced Sep 1, 2026, 2:57 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

High Carbohydrate vs. High Fat Diets in the Treatment of Obesity (JBR 0512)

NCT00123240
View directory record Official record
Conditions
Obesity
Interventions
Low calorie high carbohydrate diet, Low calorie high fat/protein diet
Behavioral
Lead sponsor
Rockefeller University
Other
Eligibility
30 Years to 50 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2010
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 10, 2012 · Synced Sep 1, 2026, 2:57 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Determination of the Effect of Extreme Dietary Carbohydrate Restriction on Hepatic Glucose Production

NCT01262326
View directory record Official record
Conditions
Non-Alcoholic Fatty Liver Disease
Interventions
Calorie and Carbohydrate Restriction
Other
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2011
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Nov 15, 2018 · Synced Sep 1, 2026, 2:57 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 11, 2019 · Synced Sep 1, 2026, 2:57 PM EDT
Withdrawn Not applicable Interventional

Isoleucine Addition Treatment Effects in a Controlled Diet Study

NCT07329088
View directory record Official record
Conditions
Prediabetes (Insulin Resistance, Impaired Glucose Tolerance), Metabolic Syndrome (MetS), Obesity & Overweight
Interventions
L-Isoleucine, Low-isoleucine diet
Dietary Supplement · Other
Lead sponsor
Jean L. Fry
Other
Eligibility
18 Years to 65 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2029
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Apr 14, 2026 · Synced Sep 1, 2026, 2:57 PM EDT
Completed Not applicable Interventional

EXERT-BCN: an Exercise and Nutrition Regimen to Designed to Improve Body Composition After Treatment for Breast Cancer

NCT05978960
View directory record Official record
Conditions
Breast Cancer
Interventions
Nutrition and resistance training exercise intervention
Other
Lead sponsor
Allegheny Singer Research Institute (also known as Allegheny Health Network Research Institute)
Other
Eligibility
20 Years to 89 Years · Female only
Enrollment
44 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 22, 2024 · Synced Sep 1, 2026, 2:57 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

A Low-Carbohydrate, Ketogenic Diet Versus Orlistat for Weight Loss

NCT00108524
View directory record Official record
Conditions
Diabetes Mellitus, Obesity
Interventions
Low carbohydrate ketogenic diet, Orlistat, Low-fat diet
Behavioral · Drug
Lead sponsor
US Department of Veterans Affairs
Federal
Eligibility
18 Years to 69 Years
Enrollment
146 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2007
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 16, 2014 · Synced Sep 1, 2026, 2:57 PM EDT
Completed Phase 4 Interventional

Lifestyle Modification for Obesity-Related Type 2 Diabetes

NCT00415688
View directory record Official record
Conditions
Type 2 Diabetes Mellitus, Overweight, Obesity
Interventions
Low carbohydrate, ketogenic diet, Low glycemic index, reduced calorie diet
Behavioral
Lead sponsor
Robert C. Atkins Foundation
Other
Eligibility
18 Years to 65 Years
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2006
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Dec 24, 2006 · Synced Sep 1, 2026, 2:57 PM EDT