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Showing 1–24 of 412 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: low carbohydrate diet Clear all
Terminated Phase 2 Interventional Results available

Metformin and Carbohydrate Restriction With Platinum Based Chemotherapy In Stage IIIB/IV Non-Squamous Non-Small Cell Lung Cancer (NS-NSCLC)

NCT02019979
View directory record Official record
Conditions
Non-small Cell Lung Cancer Stage IIIB/IV, Non-small Cell Lung Cancer Metastatic, Nonsquamous Nonsmall Cell Neoplasm of Lung
Interventions
metformin, carbohydrate restricted diet
Drug · Behavioral
Lead sponsor
Beth Israel Medical Center
Other
Eligibility
18 Years and older
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
4
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated May 3, 2018 · Synced Sep 22, 2026, 11:57 PM EDT
Completed Not applicable Interventional

Effect of Dietary Macronutrient Composition

NCT01371396
View directory record Official record
Conditions
Metabolic Syndrome, Non-alcoholic Fatty Liver Disease, Obesity
Interventions
Low-fat diet, Low-carbohydrate diet
Other
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
20 Years to 65 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2013
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Feb 5, 2019 · Synced Sep 22, 2026, 11:57 PM EDT
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers Results available

Idiopathic Intracranial Hypertension Treatment Trial

NCT01003639
View directory record Official record
Conditions
Idiopathic Intracranial Hypertension
Interventions
Acetazolamide, Placebo, Formal weight loss counselling program
Drug · Behavioral
Lead sponsor
St. Luke's-Roosevelt Hospital Center
Other
Eligibility
18 Years to 60 Years
Enrollment
165 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2014
U.S. locations
39
States / cities
Birmingham, Alabama • Los Angeles, California • Waterbury, Connecticut + 31 more
Source: ClinicalTrials.gov public record
Updated Dec 11, 2018 · Synced Sep 22, 2026, 11:57 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Trial to Assess the Effects of Diets With and Without Inulin on Energy Expenditure in Adults.

NCT06923332
View directory record Official record
Conditions
Healthy, Overweight or Obese Adults
Interventions
High Fiber bar with Inulin, Low fiber bar - no inulin
Other
Lead sponsor
Midwest Center for Metabolic and Cardiovascular Research
Other
Eligibility
18 Years to 65 Years
Enrollment
61 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Addison, Illinois
Source: ClinicalTrials.gov public record
Updated Nov 24, 2025 · Synced Sep 22, 2026, 11:57 PM EDT
Recruiting Not applicable Interventional

Effect of a DASH-Style Diet on Urinary Risk Factors for Kidney Stone Disease

NCT06210009
View directory record Official record
Conditions
Kidney Stone
Interventions
DASH-Style Diet, Western-Style Diet
Other
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
19 Years to 89 Years
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Jan 12, 2026 · Synced Sep 22, 2026, 11:57 PM EDT
Completed Not applicable Interventional

The Lifestyle Education About Nutrition for Diabetes (Legend) Study

NCT05237128
View directory record Official record
Conditions
Type 2 Diabetes
Interventions
Very low-carbohydrate diet, Moderate-carbohydrate plate-method diet
Behavioral
Lead sponsor
University of Michigan
Other
Eligibility
21 Years and older
Enrollment
182 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
2
States / cities
San Francisco, California • Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Nov 9, 2025 · Synced Sep 22, 2026, 11:57 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

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

NCT03559751
View directory record Official record
Conditions
Tobacco Use
Interventions
VLN cigarettes (A), Usual Brand Cigarettes (B), Nicotine gum (C)
Other · Drug
Lead sponsor
22nd Century Group, Inc.
Industry
Eligibility
22 Years to 65 Years
Enrollment
66 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Mar 25, 2020 · Synced Sep 22, 2026, 11:57 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Slowly Digestible Carbohydrates for GLP-1 Secretion

NCT07572513
View directory record Official record
Conditions
Blood Glucose, GLP-1, Satiety, Second Meal Intake, Healthy Participant Study
Interventions
Maltodextrin (Placebo), Raw Corn Starch
Dietary Supplement
Lead sponsor
Purdue University
Other
Eligibility
18 Years to 45 Years
Enrollment
19 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated May 6, 2026 · Synced Sep 22, 2026, 11:57 PM EDT
Not listed Not applicable Interventional

Blood Glucose Stability and Variability on Two Diets

NCT01443143
View directory record Official record
Conditions
Type 2 Diabetes, Obesity
Interventions
Portion-controlled diet, Usual Diet
Other · Dietary Supplement
Lead sponsor
Nutrisystem, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 28, 2011 · Synced Sep 22, 2026, 11:57 PM EDT
Withdrawn Not applicable Interventional Accepts healthy volunteers

Low-calorie Diet in Isolated Impaired Fasting Glucose

NCT06451055
View directory record Official record
Conditions
Isolated Impaired Fasting Glucose
Interventions
Low-calorie diet, Routine dietary and physical activity habits
Behavioral
Lead sponsor
Emory University
Other
Eligibility
35 Years to 65 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Jun 16, 2026 · Synced Sep 22, 2026, 11:57 PM EDT
Completed Not applicable Interventional

Study to Evaluate the Effect of a Very Low Carbohydrate Diet on Gastroesophageal Reflux Disease

NCT00998244
View directory record Official record
Conditions
Gastroesophageal Reflux Disease, Overweight, Acid Reflux Disease
Interventions
Diet - very low carb or low fat
Other
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 70 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 8, 2012 · Synced Sep 22, 2026, 11:57 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Glycemic Load, Metabolism & Obesity in Pregnancy

NCT01287299
View directory record Official record
Conditions
Obesity, Insulin Resistance
Interventions
Low Glycemic Load diet, Low Fat Diet
Other
Lead sponsor
UCSF Benioff Children's Hospital Oakland
Other
Eligibility
18 Years to 40 Years · Female only
Enrollment
64 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2009
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Nov 23, 2020 · Synced Sep 22, 2026, 11:57 PM EDT
Suspended 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
33 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 Dec 17, 2025 · Synced Sep 22, 2026, 11:57 PM 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 19, 2026 · Synced Sep 22, 2026, 11:57 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Liking Adaptation to Beverages With Varying Sweetness Levels After Prolonged Exposure

NCT04609657
View directory record Official record
Conditions
Sweetness Liking Adaptation
Interventions
Flavored carbonated soft drink (CSD)
Other
Lead sponsor
PepsiCo Global R&D
Industry
Eligibility
25 Years to 55 Years
Enrollment
168 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Addison, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 23, 2022 · Synced Sep 22, 2026, 11:57 PM 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 22, 2026, 11:57 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

De Novo Lipogenesis, Lipid and Carbohydrate Metabolism in Non-alcoholic Fatty Liver Disease

NCT00714129
View directory record Official record
Conditions
Non-alcoholic Fatty Liver Disease, Diabetes
Interventions
Dietary intervention (calorie restricted diet)
Other
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years to 60 Years
Enrollment
41 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2012
U.S. locations
1
States / cities
Vallejo, California
Source: ClinicalTrials.gov public record
Updated Feb 16, 2020 · Synced Sep 22, 2026, 11:57 PM EDT
Recruiting Not applicable Interventional

Carbohydrate Beta Cell Function and Glucose Control in Children With Diabetes

NCT05899166
View directory record Official record
Conditions
Diabetes Mellitus, Type 1
Interventions
Ketogenic diet, food delivery and education, Standard diet, food delivery and education
Other
Lead sponsor
Boston Children's Hospital
Other
Eligibility
5 Years to 12 Years
Enrollment
52 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2029
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 23, 2025 · Synced Sep 22, 2026, 11:57 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 22, 2026, 11:57 PM EDT
Completed Not applicable Interventional

Comparison of Healthy Diets on Breast Cancer Markers

NCT02744079
View directory record Official record
Conditions
Breast Neoplasms
Interventions
Low carbohydrate diet, Low fat diet
Behavioral
Lead sponsor
Albert Einstein College of Medicine
Other
Eligibility
21 Years and older · Female only
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Aug 30, 2020 · Synced Sep 22, 2026, 11:57 PM 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 22, 2026, 11:57 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

A Pilot Study to Evaluate the Ability of Lactoferrin to Modulate Iron Homeostasis and Exercise Performance in Exercising Females

NCT07546591
View directory record Official record
Conditions
Iron Deficiencies, Low Ferritin, Iron Deficiency, Exercise Performance of Fit Athletes
Interventions
Lactoferrin 100 mg, Lactoferrin 300 mg, Iron Supplementation (5 mg)
Dietary Supplement
Lead sponsor
Lindenwood University
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Saint Charles, Missouri
Source: ClinicalTrials.gov public record
Updated Apr 26, 2026 · Synced Sep 22, 2026, 11:57 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Specialized Diet for the Unique Metabolic Characteristics of Peripubertal African American Girls

NCT00718874
View directory record Official record
Conditions
Obesity, Type 2 Diabetes
Interventions
Dietary
Other
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
9 Years to 15 Years · Female only
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2010
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Nov 24, 2019 · Synced Sep 22, 2026, 11:57 PM EDT
Completed Phase 3 Interventional

Low Carbohydrate Diet Compared to Calorie and Fat Restricted Diet in Patients With Obesity and Type II Diabetes

NCT00108459
View directory record Official record
Conditions
Obesity, Type 2 Diabetes, Hyperlipidemia
Interventions
Low Carbohydrate Diet
Behavioral
Lead sponsor
US Department of Veterans Affairs
Federal
Eligibility
18 Years and older
Enrollment
156 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2007
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 20, 2009 · Synced Sep 22, 2026, 11:57 PM EDT