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Showing 1–23 of 23 matching trials from the live ClinicalTrials.gov search.
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Terminated Not applicable Interventional Accepts healthy volunteers

School Lunch Salad Bars and Fruit and Vegetable Consumption

NCT03283033
View directory record Official record
Conditions
Children, Only, Behavior, Eating, School, Obesity, Food Selection, Food Habits, Diet Modification, Adolescent Behavior
Interventions
New salad bar, Marketing
Behavioral
Lead sponsor
Arizona State University
Other
Eligibility
6 Years to 18 Years
Enrollment
7,491 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2023
U.S. locations
1
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated Nov 23, 2023 · Synced Sep 2, 2026, 8:36 AM EDT
Completed Not applicable Interventional

Effects of Wolffia Globosa (Mankai) in Patients Undergoing Bariatric Surgery.

NCT03999632
View directory record Official record
Conditions
Bariatric Surgery Candidate, Diet Modification
Interventions
Dietary modification with introduction of Mankai
Other
Lead sponsor
Cleveland Clinic Florida
Other
Eligibility
18 Years and older
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
Weston, Florida
Source: ClinicalTrials.gov public record
Updated Feb 3, 2021 · Synced Sep 2, 2026, 8:36 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Medifast 5 & 1 Plan

NCT01211301
View directory record Official record
Conditions
Obesity, Body Weight, Weight Loss, Overweight, Nutrition Disorders
Interventions
Food-based, Reduced Energy Diet Plan, Medifast 5 & 1 Plan
Behavioral · Other
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
19 Years to 65 Years
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2013
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Jun 18, 2013 · Synced Sep 2, 2026, 8:36 AM EDT
Recruiting Not applicable Interventional

Evaluating a Culinary Curriculum Program for Residents of Medication Assisted Therapy (MAT) Recovery Houses

NCT07251205
View directory record Official record
Conditions
Cooking Skills
Interventions
Culinary curriculum
Behavioral
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Nov 25, 2025 · Synced Sep 2, 2026, 8:36 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Varying the Energy Density and Portion Size of the Main Course After a First-course Salad

NCT01729390
View directory record Official record
Conditions
Obesity
Interventions
Energy density and portion size feeding study
Other
Lead sponsor
Penn State University
Other
Eligibility
20 Years to 45 Years · Female only
Enrollment
53 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
1
States / cities
University Park, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Nov 19, 2012 · Synced Sep 2, 2026, 8:36 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

A Short Term Evaluation of a Structured Weight Loss Plan in Overweight and Obese Adults

NCT02774668
View directory record Official record
Conditions
Metabolic Syndrome
Interventions
"Grab-and-Go" meal plan, "Jump-Start" meal plan
Other
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
30 Years to 55 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated May 3, 2025 · Synced Sep 2, 2026, 8:36 AM EDT
Completed Not applicable Interventional

Nutrition for Chronic Daily Headache

NCT01157208
View directory record Official record
Conditions
Chronic Daily Headache
Interventions
Diet A, Diet B
Other
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years and older
Enrollment
67 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 Feb 22, 2017 · Synced Sep 2, 2026, 8:36 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effect of Television Watching on Liking of Food

NCT02505490
View directory record Official record
Conditions
Hunger
Interventions
Television, No Television
Other
Lead sponsor
The University of Tennessee, Knoxville
Other
Eligibility
18 Years to 35 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2017
U.S. locations
1
States / cities
Knoxville, Tennessee
Source: ClinicalTrials.gov public record
Updated Apr 4, 2018 · Synced Sep 2, 2026, 8:36 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Dietary Lipids as Primary Modulators of Carotenoid Absorption in Vegetables

NCT01006174
View directory record Official record
Conditions
Absorption of Carotenoids From Vegetables
Interventions
Soybean Oil, Canola Oil, Butter
Other
Lead sponsor
Purdue University
Other
Eligibility
18 Years to 50 Years
Enrollment
55 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated Jan 16, 2013 · Synced Sep 2, 2026, 8:36 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Can Intermittent Fasting Mimic the Metabolic and Cardiovascular and Anti-aging Effects of Calorie Restriction?

NCT01964118
View directory record Official record
Conditions
Obesity, Overweight
Interventions
Intermittent Fasting group, control group
Other
Lead sponsor
Washington University School of Medicine
Other
Eligibility
30 Years to 65 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2016
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated May 23, 2021 · Synced Sep 2, 2026, 8:36 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Nudging for Behavior Change in School Cafeterias

NCT04156542
View directory record Official record
Conditions
Behavior, Child, Food Selection
Interventions
Basic School Lunchroom Nudges
Behavioral
Lead sponsor
Ohio State University
Other
Eligibility
10 Years to 15 Years
Enrollment
3,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016
U.S. locations
6
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Nov 6, 2019 · Synced Sep 2, 2026, 8:36 AM EDT
Completed Phase 3 Interventional

Surgery Or Lifestyle Intervention for Type 2 Diabetes (SOLID)

NCT01040468
View directory record Official record
Conditions
Type 2 Diabetes
Interventions
Roux-en-Y Gastric Bypass surgery, Laparoscopic Adjustable Gastric Banding surgery, Intensive Lifestyle Modification
Procedure · Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 65 Years
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2015
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 18, 2016 · Synced Sep 2, 2026, 8:36 AM EDT
Terminated Not applicable Interventional

Reducing Insulin, Growth Hormones, and Tumors

NCT03785808
View directory record Official record
Conditions
Diet Modification, Lung Cancer
Interventions
Special Diet Therapy (low-carb), Special Diet Therapy (low-fat), Special Diet Therapy (USDA control)
Behavioral
Lead sponsor
Fred Hutchinson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Aug 11, 2019 · Synced Sep 2, 2026, 8:36 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Egg Consumption on Carotenoid Absorption From Co-consumed, Non-Egg Food

NCT01951313
View directory record Official record
Conditions
Will Consuming Eggs With a Mixed Vegetable Salad Increase Carotenoid Absorption
Interventions
Egg consumption
Other
Lead sponsor
Purdue University
Other
Eligibility
19 Years to 45 Years · Male only
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated Jun 17, 2014 · Synced Sep 2, 2026, 8:36 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Analysis of MicroBial Metabolites After Eating Refined Food

NCT04308473
View directory record Official record
Conditions
Dietary Habits
Interventions
Ultra-processed Food Meal, Whole Food Meal
Other
Lead sponsor
The Cleveland Clinic
Other
Eligibility
18 Years and older
Enrollment
46 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2026
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Jun 24, 2026 · Synced Sep 2, 2026, 8:36 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Black Pepper on the Absorption of Nutrients in Vegetables

NCT03490955
View directory record Official record
Conditions
Black Pepper, Absorption, Carotenoid
Interventions
salad dressing (canola oil) and black pepper, salad dressing (canola oil), black pepper, salad, Salad dressing (olive oil) and black pepper, Salad dressing (corn oil) and black pepper, Salad dressing (sunflower oil) and black pepper, Salad dressing (flaxseed oil) and black pepper
Other
Lead sponsor
University of Massachusetts, Amherst
Other
Eligibility
18 Years to 30 Years
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Amherst, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 29, 2021 · Synced Sep 2, 2026, 8:36 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Lowering Caloric Density of the Diet

NCT02674971
View directory record Official record
Conditions
Obesity, Feeding Behavior
Interventions
Common components of intervention
Behavioral
Lead sponsor
The University of Tennessee, Knoxville
Other
Eligibility
18 Years to 65 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2025
U.S. locations
1
States / cities
Knoxville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jun 8, 2026 · Synced Sep 2, 2026, 8:36 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Salad Bars in the National School Lunch Program: Impact on Dietary Consumption Patterns in Elementary School Students

NCT05605483
View directory record Official record
Conditions
Diet, Food, and Nutrition
Interventions
Salad bar, Waitlisted control, Salad bar post-COVID
Other
Lead sponsor
Virginia Commonwealth University
Other
Eligibility
5 Years and older
Enrollment
6,269 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2023
U.S. locations
1
States / cities
Henrico, Virginia
Source: ClinicalTrials.gov public record
Updated Aug 1, 2023 · Synced Sep 2, 2026, 8:36 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Eat Well for Life: A Weight Loss Maintenance Study

NCT01849627
View directory record Official record
Conditions
Obesity
Interventions
Low-ED, Energy Balance
Behavioral
Lead sponsor
The University of Tennessee, Knoxville
Other
Eligibility
18 Years to 70 Years
Enrollment
345 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2025
U.S. locations
1
States / cities
Knoxville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jun 8, 2026 · Synced Sep 2, 2026, 8:36 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Feeding the Rainbow to Investigate Endothelial Dysfunction

NCT01175577
View directory record Official record
Conditions
Dietary Modification, Cardiovascular Disease
Interventions
Chlorophyll complex, Standard Process, Betatene, sold as "Full Spectrum Carotenoid Complex", Small carotenoid-rich meals, Placebo
Dietary Supplement · Other
Lead sponsor
Bastyr University
Other
Eligibility
18 Years to 65 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2011
U.S. locations
2
States / cities
Kenmore, Washington • Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Feb 2, 2012 · Synced Sep 2, 2026, 8:36 AM EDT
Completed Not applicable Interventional

Calorie Restriction in Multiple Sclerosis Patients

NCT02411838
View directory record Official record
Conditions
Multiple Sclerosis
Interventions
Calorie restriction
Other
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 60 Years
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated May 28, 2020 · Synced Sep 2, 2026, 8:36 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Mushroom Ingestion Study

NCT04257201
View directory record Official record
Conditions
Diet, Healthy
Interventions
Yellow Oyster -- 84 g, Yellow Oyster -- 168 g, White button -- 84 g, White button -- 168 g, Control
Other
Lead sponsor
Purdue University
Other
Eligibility
30 Years to 69 Years
Enrollment
7 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated Feb 15, 2024 · Synced Sep 2, 2026, 8:36 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Improving Protein Intake in Older Adults

NCT05175391
View directory record Official record
Conditions
Food Preferences
Interventions
Meat based protein with added spice; Plant based protein with added spice
Other
Lead sponsor
University of Colorado, Denver
Other
Eligibility
60 Years and older
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Mar 9, 2023 · Synced Sep 2, 2026, 8:36 AM EDT