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ClinicalTrials.gov public records Last synced Oct 19, 2026, 1:36 AM EDT

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Showing 1–24 of 412 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Low-carbohydrate diet Clear all
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 Oct 13, 2026 · Synced Oct 19, 2026, 1:36 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 19, 2026, 1:36 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 22, 2022 · Synced Oct 19, 2026, 1:36 AM EDT
Completed Not applicable Interventional Results available

ACT1ON Phase 2 (SMART Pilot) and Phase 3 (Efficacy Trial Development)

NCT03651622
View directory record Official record
Conditions
Diabetes Mellitus, Type 1, Overweight and Obesity
Interventions
Hypocaloric, low carbohydrate diet, Hypocaloric, moderate low fat diet, Mediterranean diet, no caloric restriction
Behavioral
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
19 Years to 30 Years
Enrollment
68 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
2
States / cities
Palo Alto, California • Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Mar 4, 2022 · Synced Oct 19, 2026, 1:36 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Development of an Adaptive Treatment for Weight Loss in People With Prediabetes

NCT04745572
View directory record Official record
Conditions
PreDiabetes, Obesity
Interventions
High Carbohydrate Diet, Reduced Carbohydrate Diet
Behavioral
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years to 75 Years
Enrollment
90 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Apr 27, 2025 · Synced Oct 19, 2026, 1:36 AM 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 18, 2013 · Synced Oct 19, 2026, 1:36 AM EDT
Terminated No phase listed Observational

Study of the Effect of a Very-Low-Carbohydrate Diet on Energy Expenditure

NCT01967563
View directory record Official record
Conditions
Obesity, Appetite, Healthy Volunteers
Interventions
Not listed
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
18 Years to 50 Years · Male only
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 22, 2025 · Synced Oct 19, 2026, 1:36 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Small Bowel Microbiota Characterization in Healthy Individuals Before and After Consumption of a Western Diet

NCT03266536
View directory record Official record
Conditions
Small Intestine Bacteria
Interventions
Western diet
Behavioral
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 65 Years
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated May 4, 2022 · Synced Oct 19, 2026, 1:36 AM EDT
Completed Not applicable Interventional

Resveratrol-Leucine Metabolite Synergy in Pre-diabetes

NCT01593605
View directory record Official record
Conditions
Impaired Glucose Tolerance
Interventions
Resveratrol, resveratrol /HMB, Placebo treatment
Dietary Supplement · Other
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years to 55 Years
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Sep 20, 2013 · Synced Oct 19, 2026, 1:36 AM EDT
Completed Not applicable Interventional

The Effect of Whole Beans on Inflammation and Satiety

NCT01190384
View directory record Official record
Conditions
Metabolic Syndrome
Interventions
Couscous plus fiber, Grape seed extract, Bean Soup
Other · Dietary Supplement
Lead sponsor
University of California, Davis
Other
Eligibility
21 Years and older
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
1
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated Jul 11, 2017 · Synced Oct 19, 2026, 1:36 AM EDT
Active, not recruiting Phase 2 Interventional

Preventing High Blood Sugar in People Being Treated for Metastatic Breast Cancer

NCT05090358
View directory record Official record
Conditions
Breast Cancer, Breast Cancer Stage IV, Metastatic Breast Cancer
Interventions
Ketogenic Diet, Low Carbohydrate Diet, Alpelisib, Fulvestrant, Canagliflozin
Dietary Supplement · Drug
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2027
U.S. locations
9
States / cities
Basking Ridge, New Jersey • Middletown, New Jersey • Montvale, New Jersey + 5 more
Source: ClinicalTrials.gov public record
Updated Aug 11, 2026 · Synced Oct 19, 2026, 1:36 AM EDT
Completed Not applicable Interventional

Web-Delivered Interventions for Blood Sugar Control for Individuals With Type 2 Diabetes

NCT02676648
View directory record Official record
Conditions
Diabetes Mellitus, Type 2
Interventions
Multicomponent online program, Breath meter, Text messages, Diet-appropriate foods and cookbooks
Behavioral
Lead sponsor
University of Michigan
Other
Eligibility
18 Years and older
Enrollment
44 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Aug 9, 2021 · Synced Oct 19, 2026, 1:36 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Fiber Health Benefits

NCT02177864
View directory record Official record
Conditions
Healthy
Interventions
Fiber, Placebo (low fiber bar)
Dietary Supplement · Other
Lead sponsor
Warren Bishop
Other
Eligibility
5 Years to 12 Years
Enrollment
100 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 28, 2017 · Synced Oct 19, 2026, 1:36 AM EDT
Completed Not applicable Interventional

Understanding the Paradoxical Rise in Blood Glucose in the Context of a Low-carbohydrate Diet

NCT07713316
View directory record Official record
Conditions
Elevated Blood Glucose, Low-carbohydrate Diet
Interventions
Carbohydrate Drink, Fat Drink, Protein Drink
Dietary Supplement
Lead sponsor
Brigham Young University
Other
Eligibility
18 Years to 65 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Provo, Utah
Source: ClinicalTrials.gov public record
Updated Jul 20, 2026 · Synced Oct 19, 2026, 1:36 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Preliminary Effect of Food Processing and Sweeteners on Glycemic and Metabolic Measures

NCT05658757
View directory record Official record
Conditions
Blood Sugar; High, Blood Pressure, Dietary Habits
Interventions
Regular sweetened commercial foods, Allulose sweetened commercial foods, Whole and minimally processed and sweetened foods
Other
Lead sponsor
University of California, Irvine
Other
Eligibility
20 Years to 99 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Irvine, California
Source: ClinicalTrials.gov public record
Updated May 3, 2023 · Synced Oct 19, 2026, 1:36 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Mediterranean Style Diet and Low Glycemic Responses

NCT03410719
View directory record Official record
Conditions
Insulin Sensitivity
Interventions
Hi GI
Other
Lead sponsor
Purdue University
Other
Eligibility
30 Years to 69 Years
Enrollment
166 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated Jul 17, 2020 · Synced Oct 19, 2026, 1:36 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

The CARING Study: Creating and Restoring Health Through Nutrition Guidance

NCT05795439
View directory record Official record
Conditions
Type2diabetes, Type 2 Diabetes Treated With Insulin
Interventions
Low-fat, vegan diet
Behavioral
Lead sponsor
Physicians Committee for Responsible Medicine
Other
Eligibility
18 Years and older
Enrollment
700 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2028
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Apr 13, 2026 · Synced Oct 19, 2026, 1:36 AM EDT
Terminated Not applicable Interventional

Ketogenic Diet in Patients With Heart Failure

NCT04235699
View directory record Official record
Conditions
Heart Failure With Preserved Ejection Fraction
Interventions
Nutritional and Dietary Manipulation
Other
Lead sponsor
Ohio State University
Other
Eligibility
18 Years to 75 Years
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Jul 24, 2024 · Synced Oct 19, 2026, 1:36 AM EDT
Completed Not applicable Interventional

Nutrition for Asthmatics with Obesity

NCT05222451
View directory record Official record
Conditions
Asthma, Obesity
Interventions
DGA Diet, MCT Diet, KETO Diet
Other
Lead sponsor
Pennington Biomedical Research Center
Other
Eligibility
18 Years to 65 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
Baton Rouge, Louisiana
Source: ClinicalTrials.gov public record
Updated Feb 4, 2025 · Synced Oct 19, 2026, 1:36 AM EDT
Active, not recruiting Not applicable Interventional

Effect of VLCD on the Reduction of Liver Steatosis and Fibrosis in Subjects With Obesity and NAFLD

NCT04861571
View directory record Official record
Conditions
NAFLD
Interventions
Dietary intervention with very low calorie diet (VLCD), Control Arm
Dietary Supplement · Other
Lead sponsor
University of Iowa
Other
Eligibility
18 Years to 70 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Mar 10, 2026 · Synced Oct 19, 2026, 1:36 AM 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 18, 2025 · Synced Oct 19, 2026, 1:36 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Effect of Increased Free Fatty Acids on Leptin Function

NCT01520454
View directory record Official record
Conditions
Obesity, Leptin Resistance
Interventions
Saline, Intralipid, Water, oral fat, Heparin
Drug · Dietary Supplement
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2016
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 11, 2018 · Synced Oct 19, 2026, 1:36 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Dietary Protein and Monocyte/Macrophage Mammalian Target of Rapamycin (mTOR) Signaling

NCT03946774
View directory record Official record
Conditions
Dietary Protein
Interventions
Dietary protein shake
Dietary Supplement
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older
Enrollment
21 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2023
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Oct 26, 2024 · Synced Oct 19, 2026, 1:36 AM EDT
Completed Not applicable Interventional

The Effect of a Low-fat Vegan Dietary Intervention on Intracellular Lipid, Insulin Sensitivity, and Glycemic Control in Type 2 Diabetes

NCT06106035
View directory record Official record
Conditions
Diabetes Mellitus, Type 2, Diabetes Mellitus Type 2 in Obese
Interventions
low-fat vegan diet
Behavioral
Lead sponsor
Physicians Committee for Responsible Medicine
Other
Eligibility
18 Years and older
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Jan 20, 2026 · Synced Oct 19, 2026, 1:36 AM EDT