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ClinicalTrials.gov public records Last synced Oct 13, 2026, 1:13 PM EDT

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Showing 145–168 of 205 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Dietary Carbohydrate Clear all
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 13, 2020 · Synced Oct 13, 2026, 1:13 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 18, 2013 · Synced Oct 13, 2026, 1:13 PM EDT
Completed Not applicable Interventional

The Lifestyle Education About Prediabetes (Leap) Study

NCT05235425
View directory record Official record
Conditions
PreDiabetes
Interventions
Standard NDPP, Very low-carbohydrate diet
Behavioral
Lead sponsor
University of Michigan
Other
Eligibility
21 Years to 75 Years
Enrollment
304 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Oct 6, 2026 · Synced Oct 13, 2026, 1:13 PM EDT
Completed Not applicable Interventional

Healthy Eating Through Reduction Of Excess Sugar

NCT02948647
View directory record Official record
Conditions
NAFLD
Interventions
Standard of care plus sugar-reduction education
Other
Lead sponsor
University of Southern California
Other
Eligibility
12 Years to 18 Years
Enrollment
113 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2021
U.S. locations
2
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Dec 9, 2021 · Synced Oct 13, 2026, 1:13 PM EDT
Completed Not applicable Interventional

A Carbohydrate-restricted Diet to Reverse Fatty Liver in Adolescents With Obesity

NCT02787668
View directory record Official record
Conditions
Non-alcoholic Fatty Liver Disease, Childhood Obesity, Insulin Resistance
Interventions
Carbohydrate-restricted diet, Control, low-fat diet
Other
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
9 Years to 17 Years
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Feb 21, 2022 · Synced Oct 13, 2026, 1:13 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Added Sugar Intake, Sweet Taste Phenotypes and Biomarkers

NCT05047588
View directory record Official record
Conditions
Healthy
Interventions
Not listed
Lead sponsor
Monell Chemical Senses Center
Other
Eligibility
3 Years to 70 Years
Enrollment
277 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2022
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 3, 2023 · Synced Oct 13, 2026, 1:13 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Dietary Carbohydrate Type and Cardiovascular Disease (CVD) Risk Indicators

NCT01610661
View directory record Official record
Conditions
Dyslipidemia
Interventions
Diet
Other
Lead sponsor
Tufts University
Other
Eligibility
50 Years and older
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2017
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 13, 2018 · Synced Oct 13, 2026, 1:13 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Egg Diet to Improve Metabolic Health and Function

NCT02760641
View directory record Official record
Conditions
Obesity
Interventions
Egg-based diet (EBD), Carbohydrate-based diet (CBD)
Other
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
60 Years to 75 Years
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2017
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Aug 21, 2017 · Synced Oct 13, 2026, 1:13 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Carbohydrate Oxidation in Elite Wheelchair Racers During Marathon Simulation

NCT04145050
View directory record Official record
Conditions
Dietary Carbohydrate, Para-Athletes
Interventions
Carbohydrate dosing
Other
Lead sponsor
University of Illinois at Urbana-Champaign
Other
Eligibility
20 Years to 50 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Champaign, Illinois
Source: ClinicalTrials.gov public record
Updated Apr 28, 2021 · Synced Oct 13, 2026, 1:13 PM EDT
Completed Not applicable Interventional Results available

Impact of a Low-Carbohydrate Diet in Pediatric Type 1 Diabetes

NCT03997409
View directory record Official record
Conditions
Type 1 Diabetes
Interventions
Dietary Intervention
Other
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
13 Years to 21 Years
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated May 8, 2023 · Synced Oct 13, 2026, 1:13 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Effects of Carbohydrate in Diet and Supplements on the Gastrointestinal Tolerability of LIK066

NCT03198767
View directory record Official record
Conditions
Obesity
Interventions
LIK066, Carbohydrate 50%, Carbohydrate 25%, Carbohydrate 8%, Carbohydrate 0%, Psyllium, Calcium carbonate
Drug · Dietary Supplement
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years to 65 Years
Enrollment
54 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
Lincoln, Nebraska
Source: ClinicalTrials.gov public record
Updated Jan 5, 2021 · Synced Oct 13, 2026, 1:13 PM EDT
Not listed Not applicable Interventional

Diet in the Management of Acromegaly

NCT05401084
View directory record Official record
Conditions
Acromegaly
Interventions
Diet
Other
Lead sponsor
Cedars-Sinai Medical Center
Other
Eligibility
18 Years and older
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Apr 19, 2024 · Synced Oct 13, 2026, 1:13 PM EDT
Completed Not applicable Interventional Results available

Intermittent Fasting and a No-Sugar Diet for Long COVID Symptoms

NCT06214455
View directory record Official record
Conditions
Long Covid19, Long COVID
Interventions
Low sugar diet and 10-12 hour eating window, Low sugar diet, 8 hour eating window and fasting
Other
Lead sponsor
Pacific Northwest University of Health Sciences
Other
Eligibility
19 Years to 69 Years
Enrollment
77 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
2
States / cities
Boulder, Colorado • Yakima, Washington
Source: ClinicalTrials.gov public record
Updated May 14, 2026 · Synced Oct 13, 2026, 1:13 PM 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 13, 2026, 1:13 PM 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 13, 2026, 1:13 PM EDT
Completed Not applicable Interventional Results available

A Study to Determine Iatrogenic Hyperinsulinemia's Contribution to Insulin Resistance and Endothelial Dysfunction in Type 1 Diabetes

NCT04118374
View directory record Official record
Conditions
Diabetes Mellitus, Type 1
Interventions
Standard Carb Diet, Low Carb Diet
Other
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years to 60 Years
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Oct 28, 2025 · Synced Oct 13, 2026, 1:13 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

iSIPsmarter: An RCT Evaluating the Efficacy of a Technology-Based Intervention to Reduce Sugary Drinks in Rural Appalachia

NCT05030753
View directory record Official record
Conditions
Diet Habit, Sugar-Sweetened Beverages
Interventions
iSIPsmarter, Patient Education (PE)
Behavioral
Lead sponsor
University of Virginia
Other
Eligibility
18 Years to 110 Years
Enrollment
249 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Oct 22, 2025 · Synced Oct 13, 2026, 1:13 PM EDT
Completed Phase 3 Interventional

A Research Study to See How Much CagriSema Lowers Blood Sugar and Body Weight Compared to Placebo in People With Type 2 Diabetes Treated With Diet and Exercise

NCT06323174
View directory record Official record
Conditions
Type 2 Diabetes
Interventions
Cagrilintide, Semaglutide, Placebo
Drug
Lead sponsor
Novo Nordisk A/S
Industry
Eligibility
18 Years and older
Enrollment
189 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
21
States / cities
Huntington Park, California • Northridge, California • Santa Ana, California + 18 more
Source: ClinicalTrials.gov public record
Updated Sep 30, 2026 · Synced Oct 13, 2026, 1:13 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Dietary Treatment Study of Fat Synthesis and Risk of Cardiovascular Disease

NCT02075710
View directory record Official record
Conditions
Overweight and Obesity
Interventions
High sugar/meal feed, High sugar/nibble, High fat/meal feed, High fat/nibble, High sugar/ 3 meals a day, High fat/ 3 meals a day
Other
Lead sponsor
University of California, San Francisco
Other
Eligibility
20 Years to 65 Years
Enrollment
33 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2021
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jul 24, 2026 · Synced Oct 13, 2026, 1:13 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Reduced Carbohydrate Diet Intervention for Polycystic Ovary Syndrome (PCOS)

NCT01028989
View directory record Official record
Conditions
Polycystic Ovary Syndrome
Interventions
Reduced Glycemic Load Diet, Standard Diet
Dietary Supplement
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
19 Years to 50 Years · Female only
Enrollment
23 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2011
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Mar 15, 2013 · Synced Oct 13, 2026, 1:13 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

EMPOWIR:Enhance the Metabolic Profile of Women With Insulin Resistance

NCT00618072
View directory record Official record
Conditions
Hyperinsulinemia, Insulin Resistance, Obesity
Interventions
metformin and rosiglitazone
Drug
Lead sponsor
New York Medical College
Other
Eligibility
35 Years to 55 Years · Female only
Enrollment
46 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2011
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Mar 28, 2014 · Synced Oct 13, 2026, 1:13 PM EDT
Completed Not applicable Interventional

Reduction of Excessive Calories From Beverages in Children

NCT02239653
View directory record Official record
Conditions
Unhealthy Diet
Interventions
Physician communication
Behavioral
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older
Enrollment
443 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Oct 2, 2018 · Synced Oct 13, 2026, 1:13 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 17, 2014 · Synced Oct 13, 2026, 1:13 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

High Fat - High Protein Diet in the Treatment of Obesity

NCT00299273
View directory record Official record
Conditions
Obesity
Interventions
Low calorie high fat/protein diet
Behavioral
Lead sponsor
Rockefeller University
Other
Eligibility
25 Years to 50 Years · Female only
Enrollment
8 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2014
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 8, 2015 · Synced Oct 13, 2026, 1:13 PM EDT