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Showing 1–24 of 344 matching trials from the live ClinicalTrials.gov search.
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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 1, 2026, 3:27 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Single Photon Emission Computed Tomography (SPECT) Imaging Study of Professional American Football Players

NCT01515839
View directory record Official record
Conditions
Traumatic Brain Injury
Interventions
Multivitamin Supplement intervention
Dietary Supplement
Lead sponsor
Amen Clinics, Inc.
Industry
Eligibility
18 Years and older · Male only
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
1
States / cities
Newport Beach, California
Source: ClinicalTrials.gov public record
Updated Jan 23, 2012 · Synced Sep 1, 2026, 3:27 PM EDT
Not listed Not applicable Interventional

The Effect of a High Fiber Diet and High-Intensity Interval Exercise in Patients With HFpEF

NCT05236413
View directory record Official record
Conditions
Heart Failure With Preserved Ejection Fraction
Interventions
High Intensity Interval Exercise, Dietary Approaches to Stop Hypertension (DASH) Diet, Exercise + DASH Diet
Behavioral
Lead sponsor
University of Virginia
Other
Eligibility
40 Years and older
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated May 6, 2024 · Synced Sep 1, 2026, 3:27 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Relation of Obesity With Frequency of Meals (MST 0557)

NCT00229255
View directory record Official record
Conditions
Obesity, Insulin Resistance, Fatty Liver
Interventions
high frequency of meals, twice a day meals
Other
Lead sponsor
Rockefeller University
Other
Eligibility
18 Years to 45 Years
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2009
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated May 31, 2012 · Synced Sep 1, 2026, 3:27 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 20, 2022 · Synced Sep 1, 2026, 3:27 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Leucine, mTOR and Athero

NCT05470218
View directory record Official record
Conditions
Atherosclerosis
Interventions
Meal
Other
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
18 Years to 95 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2026
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated May 10, 2026 · Synced Sep 1, 2026, 3:27 PM EDT
Terminated Not applicable Interventional

Soy Modulation of Immune Activation, LDL- Levels, and Lowering Inflammation by Pretzel Isoflavone Dietary Intervention

NCT02818283
View directory record Official record
Conditions
Human Immunodeficiency Virus (HIV) Infection, Hypercholesterolemia
Interventions
Soy Pretzel, Wheat Pretzel
Dietary Supplement · Other
Lead sponsor
Ohio State University
Other
Eligibility
18 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2023
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Oct 5, 2023 · Synced Sep 1, 2026, 3:27 PM 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 26, 2025 · Synced Sep 1, 2026, 3:27 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Anti-inflammatory Effects of Fiber

NCT02781350
View directory record Official record
Conditions
Postprandial Inflammation
Interventions
HFHC meal, HFHC MEAL plus Fiber
Other · Dietary Supplement
Lead sponsor
University at Buffalo
Other
Eligibility
18 Years to 80 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2013
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated May 24, 2016 · Synced Sep 1, 2026, 3:27 PM EDT
Not listed Not applicable Interventional

UCLA Breast Cancer Survivor Health Promotion Research Study

NCT05113485
View directory record Official record
Conditions
Breast Cancer
Interventions
Diabetes Prevention Program-based lifestyle change intervention (DPP), Highly Microbiota-Accessible Foods (HMAFs) intervention
Behavioral
Lead sponsor
University of California, Los Angeles
Other
Eligibility
50 Years to 75 Years · Female only
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Apr 10, 2022 · Synced Sep 1, 2026, 3:27 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Bone Response to Soy Isoflavones in Women

NCT00043745
View directory record Official record
Conditions
Osteopenia, Osteoporosis
Interventions
Soy isoflavones, Extract tablets
Dietary Supplement
Lead sponsor
Iowa State University
Other
Eligibility
45 Years to 65 Years · Female only
Enrollment
224 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2003
U.S. locations
2
States / cities
Davis, California • Ames, Iowa
Source: ClinicalTrials.gov public record
Updated Feb 6, 2013 · Synced Sep 1, 2026, 3:27 PM EDT
Terminated Early Phase 1 Interventional Accepts healthy volunteers Results available

Vascular Dysfunction in Black Individuals: Roles of Nitric Oxide and Endothelin-1

NCT04770155
View directory record Official record
Conditions
Vascular Function, Racial Disparity
Interventions
Dietary Nitrates 400 mg, L-citrulline 3 g, Sildenafil 100 mg, Bosentan 125 mg
Dietary Supplement · Drug
Lead sponsor
University of Mississippi Medical Center
Other
Eligibility
18 Years to 40 Years
Enrollment
8 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Jackson, Mississippi
Source: ClinicalTrials.gov public record
Updated Oct 30, 2023 · Synced Sep 1, 2026, 3:27 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effects of Obesity and Protein Intake on the Kidney

NCT00244790
View directory record Official record
Conditions
Kidney Diseases
Interventions
Diet
Behavioral
Lead sponsor
Indiana University
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2014
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Aug 27, 2015 · Synced Sep 1, 2026, 3:27 PM EDT
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, 3:27 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, 3:27 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Calcium Retention as Influenced by Dietary Components That Induce an Acid Load

NCT00620763
View directory record Official record
Conditions
Healthy
Interventions
High Meat - High Potential Renal Acid Load (PRAL) diet, Low Protein - Low Potential Renal Acid Load (PRAL) diet
Other
Lead sponsor
USDA Grand Forks Human Nutrition Research Center
Federal
Eligibility
40 Years to 75 Years · Female only
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008
U.S. locations
1
States / cities
Grand Forks, North Dakota
Source: ClinicalTrials.gov public record
Updated Jul 1, 2018 · Synced Sep 1, 2026, 3:27 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, 3:27 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Safety Evaluation of a Diet and Nutritional Supplementation Program- Purify 2.0

NCT03685552
View directory record Official record
Conditions
Gastrointestinal Symptoms
Interventions
Prog: Purify-2
Other
Lead sponsor
Nature's Sunshine Products, Inc.
Industry
Eligibility
18 Years to 69 Years
Enrollment
38 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
Lehi, Utah
Source: ClinicalTrials.gov public record
Updated Sep 25, 2018 · Synced Sep 1, 2026, 3:27 PM EDT
Completed Not applicable Interventional

Beef in an Optimal Lean Diet (BOLD) Effects on Metabolic Syndrome

NCT00937638
View directory record Official record
Conditions
Metabolic Syndrome, Cardiovascular Disease
Interventions
BOLD Diet, BOLD-X Diet, Modified DASH Diet
Dietary Supplement
Lead sponsor
Penn State University
Other
Eligibility
30 Years to 60 Years
Enrollment
63 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
1
States / cities
University Park, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 20, 2023 · Synced Sep 1, 2026, 3:27 PM EDT
Terminated Not applicable Interventional

Exercise Training and Metabolic Flexibility in Prediabetes

NCT04051229
View directory record Official record
Conditions
PreDiabetes, Sedentary Lifestyle
Interventions
6-week exercise training program, Standardized isoenergetic high fat diet
Behavioral
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
60 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
2
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Nov 6, 2023 · Synced Sep 1, 2026, 3:27 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, 3:27 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, 3:27 PM EDT
Recruiting Not applicable Interventional

The Food Environment, Microbial Cysteine Metabolism, and Cancer Disparities

NCT07086833
View directory record Official record
Conditions
Colorectal Cancer
Interventions
Low Cysteine Diet, High Cysteine Diet
Other
Lead sponsor
Purdue University
Other
Eligibility
45 Years to 75 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
2
States / cities
Indianapolis, Indiana • West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated May 13, 2026 · Synced Sep 1, 2026, 3:27 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, 3:27 PM EDT