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Showing 1–24 of 277 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Carbohydrate restricted diet Clear all
Completed Phase 2 Interventional

Carbohydrate Restricted Diet Intervention for Men on Prostate Cancer Active Surveillance

NCT03679260
View directory record Official record
Conditions
Prostate Cancer
Interventions
Carbohydrate restricted diet, Non-restricted diet, Phone counseling with dietitian
Other
Lead sponsor
Cedars-Sinai Medical Center
Other
Eligibility
18 Years and older · Male only
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2023
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Mar 29, 2023 · Synced Sep 8, 2026, 9:30 PM EDT
Recruiting Not applicable Interventional

Diet Order Effects of Low Fat vs. Low Carb Diets on Body Fat Change

NCT06325722
View directory record Official record
Conditions
Overweight, Obesity
Interventions
Low-carbohydrate Diet, Low-fat Diet
Other
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
18 Years to 50 Years
Enrollment
42 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2029
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 30, 2026 · Synced Sep 8, 2026, 9:30 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Investigating the Production of Lipoproteins and Acetyl-CoA During a Ketogenic Diet

NCT03901014
View directory record Official record
Conditions
Cholesterol Metabolism, Ketone Metabolism
Interventions
Standard American diet, Very low carbohydrate diet
Other
Lead sponsor
Touro University, California
Other
Eligibility
18 Years to 50 Years · Male only
Enrollment
4 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
Vallejo, California
Source: ClinicalTrials.gov public record
Updated May 17, 2026 · Synced Sep 8, 2026, 9:30 PM EDT
Completed Not applicable Interventional

A Pilot Study Examining Diet in Primary Sclerosing Cholangitis

NCT04678219
View directory record Official record
Conditions
Primary Sclerosing Cholangitis
Interventions
Dietary Intervention
Other
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years to 70 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 11, 2026 · Synced Sep 8, 2026, 9:30 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 8, 2026, 9:30 PM EDT
Completed Not applicable Interventional Results available

Effects of a Very Low Carbohydrate Diet on Symptoms of Irritable Bowel Syndrome (IBS)

NCT00616200
View directory record Official record
Conditions
Diarrhea Predominant Irritable Bowel Syndrome
Interventions
Very low carbohydrate diet
Other
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 70 Years
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Oct 15, 2017 · Synced Sep 8, 2026, 9:30 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

PrOtein and WEight Loss in teenageRs

NCT02079831
View directory record Official record
Conditions
Pediatric Obesity
Interventions
Energy Restriction, Higher protein, Lower Protein
Behavioral
Lead sponsor
Pennington Biomedical Research Center
Other
Eligibility
12 Years to 17 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Baton Rouge, Louisiana
Source: ClinicalTrials.gov public record
Updated Jan 10, 2016 · Synced Sep 8, 2026, 9:30 PM EDT
Active, not recruiting Not applicable Interventional

Development of an Inclusive Adaptive Treatment Strategy for Weight Loss in People With Prediabetes Using a Sequential Multiple Assignment Randomized Trial

NCT06976307
View directory record Official record
Conditions
Disabilities, Obesity and Overweight, Prediabetes
Interventions
High Carbohydrate Diet, Reduced Carbohydrate Diet
Behavioral
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years to 75 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Jul 7, 2026 · Synced Sep 8, 2026, 9:30 PM EDT
Completed Not applicable Interventional

Ketogenic Diet to Improve Neuro-recovery

NCT03509571
View directory record Official record
Conditions
Spinal Cord Injuries
Interventions
Ketogenic Diet, Standard Diet
Other
Lead sponsor
Ohio State University
Other
Eligibility
19 Years to 60 Years
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2026
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 25, 2026 · Synced Sep 8, 2026, 9:30 PM EDT
Completed Not applicable Interventional

Effect of Macrocomposition on Nonalcoholic Fatty Liver Disease (NAFLD) in Bariatric Surgery Candidates

NCT00887393
View directory record Official record
Conditions
Morbid Obesity, Non-alcoholic Fatty Liver Disease
Interventions
low carbohydrate diet, low-fat diet
Other
Lead sponsor
University of Michigan
Other
Eligibility
18 Years to 55 Years
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Jun 17, 2013 · Synced Sep 8, 2026, 9:30 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Obesity Risk in African American Women is Determined by a Diet-by-phenotype Interaction

NCT03499509
View directory record Official record
Conditions
Diet Modification
Interventions
Low Glycemic Diet, High Glycemic Diet
Other
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
19 Years to 65 Years · Female only
Enrollment
67 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2024
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated May 17, 2025 · Synced Sep 8, 2026, 9:30 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Brain Fuel - Morning Nutrition and Cognitive Function

NCT03386396
View directory record Official record
Conditions
Obese, Healthy
Interventions
High protein/low carbohydrate, High carbohydrate/low protein
Dietary Supplement
Lead sponsor
Arkansas Children's Hospital Research Institute
Other
Eligibility
9 Years to 10 Years
Enrollment
151 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2026
U.S. locations
1
States / cities
Little Rock, Arkansas
Source: ClinicalTrials.gov public record
Updated Oct 19, 2025 · Synced Sep 8, 2026, 9:30 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Pain in Amputees Reduced by Administration of Diet Examination

NCT05460845
View directory record Official record
Conditions
Amputation, Phantom Limb Pain, Residual Limb Pain
Interventions
Low-Carbohydrate Diet
Behavioral
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years to 65 Years
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Aug 29, 2023 · Synced Sep 8, 2026, 9:30 PM EDT
Completed Not applicable Interventional

Heart Obesity Prevention Education

NCT02092545
View directory record Official record
Conditions
Obesity
Interventions
Ketogenic diet
Other
Lead sponsor
Tampa General Hospital
Other
Eligibility
25 Years to 64 Years · Male only
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Dec 18, 2014 · Synced Sep 8, 2026, 9:30 PM EDT
Completed Not applicable Interventional

Understanding the Mechanism(s) of Action on the Modified Atkins Diet for Epilepsy: Human Brain Tissues

NCT02565966
View directory record Official record
Conditions
Epilepsy
Interventions
Modified Atkins Diet (MAD)
Other
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years and older
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2019
U.S. locations
2
States / cities
Livingston, New Jersey • New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 17, 2020 · Synced Sep 8, 2026, 9:30 PM EDT
Completed Not applicable Interventional

Moderately Carbohydrate-restricted Diet to Treat NAFLD in Adolescents

NCT05268042
View directory record Official record
Conditions
Non-Alcoholic Fatty Liver Disease, Obesity
Interventions
Moderately carbohydrate-restricted diet, Fat-restricted diet
Other
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
10 Years to 17 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Jul 26, 2026 · Synced Sep 8, 2026, 9:30 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Framingham State Food Study

NCT02068885
View directory record Official record
Conditions
Obesity, Diabetes, Cardiovascular Disease
Interventions
Feeding study
Behavioral
Lead sponsor
Boston Children's Hospital
Other
Eligibility
18 Years to 65 Years
Enrollment
234 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2017
U.S. locations
1
States / cities
Framingham, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 8, 2026 · Synced Sep 8, 2026, 9:30 PM EDT
Completed Not applicable Interventional Results available

Investigating Racial Differences in Diet Benefits for Knee Osteoarthritis

NCT04343716
View directory record Official record
Conditions
Knee Osteoarthritis
Interventions
Low-carbohydrate diet
Behavioral
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
65 Years to 75 Years · Female only
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Aug 12, 2026 · Synced Sep 8, 2026, 9:30 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 8, 2026, 9:30 PM EDT
Enrolling by invitation Phase 1Phase 2 Interventional

Autism Spectrum Disorder (ASD) Neurodevelopmental Disorder With Issues Social Behavior, Communication Issues, GI Dysfunction. Study is Multimodal Interventions Targeting These Pathways With cSVF, Stored MSCs, FMT and Diet Modification. Role of Autoimmunity, Gut-brain Issues, & Issues Examined.

NCT07546942
View directory record Official record
Conditions
Autism Spectrum Disorder, Autism, Autism Spectral Disorder
Interventions
Autologous MSC isolation, concentration, and cryopreservation of adult mesenchymal stem cells, Fecal Biomicrome Transplantation (FMT), Ketogenic RESET Diet Protocol, Trial combines use of cSVF and MSCs (cryopres) with diet modification and FMT (fecal material Transplant in adult ASD patients, FMT (Fecal Material Tranplantation), Use autologous cSVF + MSCs (cryo) for management of autoimmune component, anti-inflammatory and immune modulation
Procedure · Dietary Supplement · Behavioral + 1 more
Lead sponsor
Black Tie Medical, Inc.
Industry
Eligibility
10 Years to 90 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
2
States / cities
Hamilton, Montana
Source: ClinicalTrials.gov public record
Updated Apr 26, 2026 · Synced Sep 8, 2026, 9:30 PM EDT
Terminated Phase 1Phase 2 Interventional

Ketogenic Diet With Radiation and Chemotherapy for Newly Diagnosed Glioblastoma

NCT02046187
View directory record Official record
Conditions
Glioblastoma (GBM)
Interventions
Ketogenic Diet, Radiation therapy, Temozolomide
Dietary Supplement · Radiation · Drug
Lead sponsor
St. Joseph's Hospital and Medical Center, Phoenix
Other
Eligibility
18 Years to 80 Years
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2017
U.S. locations
1
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated Jun 15, 2021 · Synced Sep 8, 2026, 9:30 PM EDT
Completed Not applicable Interventional

Effect of South Beach Diet (SBD™) Using SBD™ Products Compared to a Calorie-Restricted Diet in Women

NCT00932516
View directory record Official record
Conditions
Overweight
Interventions
South Beach Diet™ with South Beach Diet™ Products, South Beach Diet™, Calorie restricted diet with South Beach Diet™ Products, Calorie Restricted Diet
Behavioral
Lead sponsor
Mondelēz International, Inc.
Industry
Eligibility
18 Years to 55 Years · Female only
Enrollment
248 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
4
States / cities
Northridge, California • Bradenton, Florida • Miami, Florida + 1 more
Source: ClinicalTrials.gov public record
Updated Jul 2, 2009 · Synced Sep 8, 2026, 9:30 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Low-Carbohydrate Dietary Pattern on Glycemic Outcomes Trial

NCT03675360
View directory record Official record
Conditions
Diabetes, PreDiabetes, Metabolic Disease, Hyperglycemia, Diet Modification, Glucose Intolerance, Glucose Metabolism Disorders (Including Diabetes Mellitus), Endocrine System Diseases
Interventions
Low-Carbohydrate Diet
Behavioral
Lead sponsor
Tulane University School of Public Health and Tropical Medicine
Other
Eligibility
40 Years to 70 Years
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2021
U.S. locations
1
States / cities
New Orleans, Louisiana
Source: ClinicalTrials.gov public record
Updated Feb 28, 2023 · Synced Sep 8, 2026, 9:30 PM EDT
Completed Not applicable Interventional

A Pilot Study to Determine the Efficacy of a Low Carbohydrate Diet in Treatment of Adolescents With Metabolic Syndrome

NCT00940966
View directory record Official record
Conditions
Elevated Triglycerides, Systolic Hypertension, Insulin Resistance, Abdominal Obesity
Interventions
standard ADA diet, energy restricted very-low carbohydrate diet, low glycemic diet
Dietary Supplement
Lead sponsor
CAMC Health System
Other
Eligibility
12 Years to 18 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2012
U.S. locations
1
States / cities
Charleston, West Virginia
Source: ClinicalTrials.gov public record
Updated Aug 20, 2026 · Synced Sep 8, 2026, 9:30 PM EDT