Independent directory Public ClinicalTrials.gov records United States
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ClinicalTrials.gov public records Last synced Sep 8, 2026, 4:28 PM EDT

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Showing 1–24 of 234 matching trials from the live ClinicalTrials.gov search.
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Conditions
Obesity, Normal Physiology, Healthy Volunteers
Interventions
+200% of dietary requirements, 50% of calories from carbohydrates, 20% from protein, and 30% from fat, fasting, -50% of energy balance requirements. 50% of calories from carbohydrates, 20% from protein, and 30% from fat, +150% of energy balance requirements, 50% of calories from carbohydrates, 20% from protein, and 30% from fat, +200% of dietary requirements, 51% of the calories from carbohydrates, 46%, from fat and 3% from protein, -25% of energy balance requirements, 50% of calories from carbohydrates, 20% from protein, and 30% from fat, +150% of dietary requirements, 51% of the calories from carbohydrates, 46%, from fat and 3% from protein
Dietary Supplement
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
18 Years to 60 Years
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
1
States / cities
Phoenix, Arizona
Completed Not applicable Interventional Accepts healthy volunteers

Protein Intake & Insulin Action

NCT02004002
Conditions
Obesity
Interventions
Weight maintenance with normal protein intake, Weight maintenance with protein restriction
Behavioral
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 65 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2016
U.S. locations
1
States / cities
St Louis, Missouri
Completed Not applicable Interventional Accepts healthy volunteers Results available

The Effects of Exercise on Dietary Intake

NCT00943436
Conditions
Active Lifestyle Males, Inactive Lifestyle Males
Interventions
Exercise Session, Rest Session
Other
Lead sponsor
The University of Tennessee, Knoxville
Other
Eligibility
18 Years to 30 Years · Male only
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
1
States / cities
Knoxville, Tennessee
Conditions
Cardiometabolic Risk Factors
Interventions
Culinary focused nutrition education, Standard low intensity nutrition education
Behavioral
Lead sponsor
Penn State University
Other
Eligibility
31 Years to 59 Years
Enrollment
55 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
University Park, Pennsylvania
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

Dietary Variety Versus Dietary Fat Effects in Energy Intake

NCT00285571
Conditions
Healthy
Interventions
Controlled Feeding Intervention
Behavioral
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
18 Years to 50 Years
Enrollment
64 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2007
U.S. locations
1
States / cities
Kenmore, Washington
Completed Not applicable Interventional Accepts healthy volunteers

THIS-WIC Telehealth Solutions: Evaluation With North Carolina WIC Clients

NCT05854199
Conditions
Telehealth, Nutrition Education, Dietary Intake, WIC
Interventions
Telehealth solution
Behavioral
Lead sponsor
Tufts University
Other
Eligibility
18 Years and older · Female only
Enrollment
892 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Boston, Massachusetts
Conditions
Obesity, Women (Between 30 to 60 Years Old)
Interventions
Protein Rich Foods
Behavioral
Lead sponsor
University of Texas at Austin
Other
Eligibility
30 Years to 60 Years · Female only
Enrollment
75 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
2
States / cities
Austin, Texas
Recruiting Not applicable Interventional Accepts healthy volunteers

Encouraging a Plant Based Diet in an Underserved Urban Population

NCT06090409
Conditions
Food Neophobia, Food Preferences, Dietary Habits
Interventions
Implementing free/subsidized agricultural produce to encourage a plant-based diet.
Other
Lead sponsor
University of Louisville
Other
Eligibility
18 Years and older
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Louisville, Kentucky
Conditions
Anatomic Stage I Breast Cancer AJCC v8, Anatomic Stage II Breast Cancer AJCC v8, Anatomic Stage III Breast Cancer AJCC v8, Stage I Colorectal Cancer AJCC v8, Stage I Prostate Cancer AJCC v8, Stage II Colorectal Cancer AJCC v8, Stage II Prostate Cancer AJCC v8, Stage III Colorectal Cancer AJCC v8, Stage III Prostate Cancer AJCC v8
Interventions
Exercise Intervention, Informational Intervention, Nutritional Assessment, Physical Performance Testing, Quality-of-Life Assessment, Questionnaire Administration
Other
Lead sponsor
Ohio State University Comprehensive Cancer Center
Other
Eligibility
65 Years and older
Enrollment
75 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Columbus, Ohio
Completed Not applicable Interventional Accepts healthy volunteers

The Effect of Watching a Television Show on the Liking of Snack Foods

NCT01694043
Conditions
Measure Grams and Kcals of Snack Foods Consumed in Each Condition
Interventions
Healthy Foods, Unhealthy Snack Foods
Other
Lead sponsor
The University of Tennessee, Knoxville
Other
Eligibility
18 Years to 30 Years · Female only
Enrollment
38 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2015
U.S. locations
1
States / cities
Knoxville, Tennessee
Conditions
Overweight, Obesity
Interventions
Behavioral weight loss intervention
Behavioral
Lead sponsor
The University of Tennessee, Knoxville
Other
Eligibility
21 Years to 65 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Knoxville, Tennessee
Completed Not applicable Interventional Accepts healthy volunteers

Telehealth Intervention Strategies for WIC (THIS-WIC)- Michigan

NCT05746741
Conditions
Telehealth, Nutrition Education, Breast Feeding, Dietary Intake, WIC
Interventions
Telehealth solution
Behavioral
Lead sponsor
Tufts University
Other
Eligibility
18 Years and older · Female only
Enrollment
386 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Boston, Massachusetts
Conditions
Hypertension, Blood Pressure
Interventions
LowSalt4Life Application, Just-In-time Adaptive Intervention (JITAI)
Behavioral
Lead sponsor
University of Michigan
Other
Eligibility
18 Years and older
Enrollment
410 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
1
States / cities
Ann Arbor, Michigan
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Dietary Protein on Musculoskeletal Health During Calorie Deficiency

NCT01292395
Conditions
Weight Loss, Muscle Loss, Bone Loss
Interventions
Dietary Protein Intake
Other
Lead sponsor
United States Army Research Institute of Environmental Medicine
Federal
Eligibility
18 Years to 42 Years
Enrollment
42 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
1
States / cities
Grand Forks, North Dakota
Conditions
Healthy Diet, Healthy Aging
Interventions
Low Added Sugar Meal, High Added Sugar Meal
Other
Lead sponsor
University of Delaware
Other
Eligibility
30 Years to 64 Years
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Newark, Delaware
Conditions
Obesity, Sarcopenia, Aging
Interventions
DASH diet containing daily intakes of red meat
Other
Lead sponsor
South Dakota State University
Other
Eligibility
65 Years and older
Enrollment
46 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Brookings, South Dakota
Completed No phase listed Observational Accepts healthy volunteers

Barriers and Facilitators to Vegetable Intake

NCT03607526
Conditions
Overweight, Obese
Interventions
Barriers, Facilitators
Other
Lead sponsor
USDA Grand Forks Human Nutrition Research Center
Federal
Eligibility
18 Years to 65 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Grand Forks, North Dakota
Completed Not applicable Interventional Accepts healthy volunteers Results available

The Effects of Added Sugar Intake on Brain Blood Flow and Hippocampal Function in Midlife Adults

NCT05211726
Conditions
Aging, Healthy Diet
Interventions
Low Added Sugar Diet, High Added Sugar Diet
Other
Lead sponsor
University of Delaware
Other
Eligibility
50 Years to 64 Years
Enrollment
44 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Newark, Delaware
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Black Tea Intake on Serum Lipids

NCT01882283
Conditions
Hypercholesterolemia
Interventions
Tea Treatment Group, Placebo
Dietary Supplement
Lead sponsor
University of Minnesota
Other
Eligibility
45 Years to 65 Years
Enrollment
57 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2002 – 2004
U.S. locations
1
States / cities
Minneapolis, Minnesota
Completed Not applicable Interventional Accepts healthy volunteers

Maintenance of Recommended Sodium Intake

NCT01615159
Conditions
Maintenance of Recommended Sodium Intake
Interventions
Behavior and lifestyle counseling
Behavioral
Lead sponsor
Johns Hopkins Bloomberg School of Public Health
Other
Eligibility
18 Years to 105 Years
Enrollment
55 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
1
States / cities
Baltimore, Maryland
Completed Not applicable Interventional Accepts healthy volunteers

The Benefits of Consuming Hummus as an Afternoon Snack

NCT03595462
Conditions
Appetitive Behavior
Interventions
Snack, No Snack
Other
Lead sponsor
Purdue University
Other
Eligibility
18 Years to 50 Years
Enrollment
33 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
West Lafayette, Indiana
Completed Not applicable Interventional Accepts healthy volunteers

The Body's Response to Changes in Dietary Protein and Meal-Frequency In Men

NCT01171716
Conditions
Low Protein Dietary Intake, High Protein Dietary Intake
Interventions
Meal Patterning
Other
Lead sponsor
Purdue University
Other
Eligibility
21 Years and older · Male only
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
1
States / cities
West Lafayette, Indiana
Completed Not applicable Interventional Accepts healthy volunteers

Fruits and Vegetables Incentives Study

NCT04235413
Conditions
Obesity, Fruit and Vegetable Intake, Healthy Diet
Interventions
Real-Time Incentives Group
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
244 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Conditions
Obesity
Interventions
Increase Fruits and Vegetables, Decrease Snack Foods, Increase Fruits and Vegetables and Decrease Snack Foods
Behavioral
Lead sponsor
The University of Tennessee, Knoxville
Other
Eligibility
6 Years to 12 Years
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2025
U.S. locations
2
States / cities
Knoxville, Tennessee