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ClinicalTrials.gov public records Last synced Oct 19, 2026, 6:11 PM EDT

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Showing 1–24 of 83 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Food portion size Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Foundations for Health

NCT01304615
View directory record Official record
Conditions
Overweight, Obese
Interventions
Decrease Energy Density of the Diet, Increase Steps per Day, Consumption of Self-made Meals
Behavioral
Lead sponsor
The University of Tennessee, Knoxville
Other
Eligibility
18 Years to 35 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
1
States / cities
Knoxville, Tennessee
Source: ClinicalTrials.gov public record
Updated Apr 5, 2018 · Synced Oct 19, 2026, 6:11 PM EDT
Completed Not applicable Interventional

I Can Do This! Managing My Diabetes

NCT06695533
View directory record Official record
Conditions
Diabetes
Interventions
Diabetes self management workbook
Behavioral
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Jul 1, 2026 · Synced Oct 19, 2026, 6:11 PM EDT
Not listed No phase listed Observational Accepts healthy volunteers

Promoting Healthier Food Purchases By Leveraging the Online-Grocery Environment

NCT02489396
View directory record Official record
Conditions
Obesity
Interventions
Nutrition facts automatically or not automatically displayed, Nutrition facts in color, Nutrition Facts Label in Larger Font, Healthier Items First
Behavioral
Lead sponsor
University of Vermont
Other
Eligibility
Not listed
Enrollment
400 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2019
U.S. locations
1
States / cities
Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated May 3, 2018 · Synced Oct 19, 2026, 6:11 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Changing Portion Size Descriptions in a Cafeteria

NCT06263621
View directory record Official record
Conditions
Food Selection, Obesity, Weight Gain, Food Preferences
Interventions
Intervention "Standard"
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
Not listed
Enrollment
101,481 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
2
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 11, 2024 · Synced Oct 19, 2026, 6:11 PM EDT
Completed Phase 2 Interventional Results available

Effect of a Wide Spectrum Nutritional Supplement on Mitochondrial Function in Children With Autism Spectrum Disorder

NCT03835117
View directory record Official record
Conditions
Autism Spectrum Disorder
Interventions
Wide-spectrum nutritional supplement, Placebo
Drug · Other
Lead sponsor
Rossignol Medical Center
Other
Eligibility
2 Years to 17 Years
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated Jun 30, 2026 · Synced Oct 19, 2026, 6:11 PM EDT
Completed Not applicable Interventional Results available

Psychological Intervention to Reduce Weight Bias Internalization

NCT03572218
View directory record Official record
Conditions
Stigmatization, Obesity, Weight Loss
Interventions
BWL, BIAS
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 65 Years
Enrollment
72 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 23, 2020 · Synced Oct 19, 2026, 6:11 PM EDT
Completed Not applicable Interventional Results available

Effect of Portion Size Over 5 Days in Preschool Children

NCT02963987
View directory record Official record
Conditions
Feeding Behavior
Interventions
Food and Beverage Portion Size
Other
Lead sponsor
Penn State University
Other
Eligibility
3 Years to 5 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
2
States / cities
University Park, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 11, 2019 · Synced Oct 19, 2026, 6:11 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Culturally Optimized Messages for Latinos

NCT05589740
View directory record Official record
Conditions
Diet, Healthy, Diet Habit, Obesity, Blood Pressure, Psychological
Interventions
Culturally tailored healthy eating advice, Standard healthy eating advice
Behavioral
Lead sponsor
Harvard School of Public Health (HSPH)
Other
Eligibility
25 Years to 65 Years
Enrollment
76 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 3, 2024 · Synced Oct 19, 2026, 6:11 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Validity of an AI-based Program to Identify Foods and Estimate Food Portion Size

NCT05343585
View directory record Official record
Conditions
Nutrition Assessment
Interventions
PortionSize AI
Device
Lead sponsor
Pennington Biomedical Research Center
Other
Eligibility
18 Years to 62 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Baton Rouge, Louisiana
Source: ClinicalTrials.gov public record
Updated Nov 18, 2023 · Synced Oct 19, 2026, 6:11 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Study of Novel Approaches for Prevention

NCT01183689
View directory record Official record
Conditions
Weight Gain
Interventions
Small Behavior Changes, Large Behavior Changes
Behavioral
Lead sponsor
Wake Forest University
Other
Eligibility
18 Years to 35 Years
Enrollment
599 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2018
U.S. locations
2
States / cities
Chapel Hill, North Carolina • Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Jan 14, 2020 · Synced Oct 19, 2026, 6:11 PM EDT
Recruiting Phase 2 Interventional

Milk Thistle Clinical Trial in Pediatric NAFLD

NCT06477146
View directory record Official record
Conditions
Non-Alcoholic Fatty Liver Disease (NAFLD)
Interventions
Milk thistle (MT), Placebo, Lifestyle Modification, Fibroscan
Drug · Behavioral · Device
Lead sponsor
University Hospitals Cleveland Medical Center
Other
Eligibility
9 Years to 22 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2029
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Jan 27, 2026 · Synced Oct 19, 2026, 6:11 PM EDT
Completed Not applicable Interventional

Solutions for Hunger And Regulating Eating

NCT05004883
View directory record Official record
Conditions
Overweight and Obesity
Interventions
Regulation of Cues Enhanced, Behavioral Weight Loss, Nutrition Education, Stress Management and Social Support
Behavioral
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years to 65 Years
Enrollment
293 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Sep 10, 2026 · Synced Oct 19, 2026, 6:11 PM EDT
Completed Not applicable Interventional

The MONITOR Study: Remote Monitoring Of a Nutrition Intervention To Optimize Treatment Response

NCT06050395
View directory record Official record
Conditions
Pancreatic Cancer
Interventions
Quality fo Life Questionnaire (FHSI), Vioscreen Food Frequency Questionnaire (FFQ), Educational Handouts, NutritionCoaching, Follow-Up Survey, Functional Assessment of Anorexia/Cachexia Treatment (FAACT) Questionnaire, Patient Reported Outcomes Measure- Cognitive Function (PROMIS-Cog) Questionnaire
Behavioral
Lead sponsor
H. Lee Moffitt Cancer Center and Research Institute
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Jun 26, 2026 · Synced Oct 19, 2026, 6:11 PM EDT
Completed Not applicable Interventional

PACIFIC: Providing Adults Collaborative Interventions For Ideal Changes

NCT02516839
View directory record Official record
Conditions
Overweight, Obesity
Interventions
Regulation of Cues (ROC), Behavioral Weight Loss (BWL), BWL + ROC, Nutrition Education, Stress Management and Social Support
Behavioral
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years to 65 Years
Enrollment
271 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Mar 25, 2020 · Synced Oct 19, 2026, 6:11 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Intake Promoting Effects of Large Portions in Children

NCT00436878
View directory record Official record
Conditions
Eating
Interventions
Food portion size
Behavioral
Lead sponsor
Temple University
Other
Eligibility
5 Years to 6 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2011
U.S. locations
2
States / cities
Philadelphia, Pennsylvania • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jul 12, 2018 · Synced Oct 19, 2026, 6:11 PM EDT
Completed Not applicable Interventional Results available

Evaluation of an Artificial Intelligence-Assisted, Image-Based Dietary Assessment Tool in the Framingham Heart Study

NCT06455111
View directory record Official record
Conditions
Dietary Habits
Interventions
Keenoa, ASA24
Other
Lead sponsor
Boston University
Other
Eligibility
18 Years and older
Enrollment
115 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 13, 2025 · Synced Oct 19, 2026, 6:11 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Time-restricted Eating Versus Daily Continuous Calorie Restriction on Body Weight and Colorectal Cancer Risk Markers

NCT05114798
View directory record Official record
Conditions
Time Restricted Eating, Obesity, Weight Loss, Colorectal Cancer
Interventions
Time restricted eating, Calorie Restriction
Behavioral
Lead sponsor
University of Illinois at Chicago
Other
Eligibility
45 Years to 70 Years
Enrollment
194 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2027
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jul 21, 2026 · Synced Oct 19, 2026, 6:11 PM EDT
Completed Not applicable Interventional

Protein-Sparing Modified Fast Intervention for Weight Loss in Obese Endometrial Cancer Survivors

NCT02135562
View directory record Official record
Conditions
Endometrial Cancer, Obesity
Interventions
Dietary Intervention, Informational Material, Dietary Education, Weight Maintenance, Average score of Obesity and Weight-Loss Quality of Life Questionnaire
Dietary Supplement · Other
Lead sponsor
Case Comprehensive Cancer Center
Other
Eligibility
18 Years to 70 Years · Female only
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
2
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Sep 20, 2017 · Synced Oct 19, 2026, 6:11 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Strengthening Families Program Online

NCT04214327
View directory record Official record
Conditions
Substance Abuse
Interventions
Strengthening Families Program Online eLearning Game, SFP Home-use DVD, Wait-Listed Control
Behavioral
Lead sponsor
Strengthening Families Program LLC
Industry
Eligibility
11 Years and older
Enrollment
480 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Jan 6, 2023 · Synced Oct 19, 2026, 6:11 PM EDT
Completed Not applicable Interventional Results available

Variations in Palatability and Portion Size of Vegetables on Meal Intake of Preschool Children

NCT03926065
View directory record Official record
Conditions
Feeding Behavior
Interventions
Plain Vegetables Served in 100% Portion Size, Plain Vegetables Served in 200% Portion Size, Enhanced Vegetables Served in 100% Portion Size, Enhanced Vegetables Served in 200% Portion Size
Other
Lead sponsor
Penn State University
Other
Eligibility
3 Years to 5 Years
Enrollment
67 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019
U.S. locations
1
States / cities
University Park, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 25, 2020 · Synced Oct 19, 2026, 6:11 PM EDT
Completed Not applicable Interventional

The Influence of Satiation Measures on the Portion Size Effect

NCT03886428
View directory record Official record
Conditions
Feeding Behavior
Interventions
100% portion size, 125% portion size, 150% portion size, 175% portion size
Other
Lead sponsor
Penn State University
Other
Eligibility
18 Years to 70 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019
U.S. locations
1
States / cities
University Park, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 13, 2020 · Synced Oct 19, 2026, 6:11 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Evaluate the Effect of Particle Size, Formulation and Food on the Pharmacokinetics of GDC-0032 in Healthy Volunteers

NCT01980953
View directory record Official record
Conditions
Healthy Volunteer
Interventions
GDC-0032 Phase III Tablet, GDC-0032 Tablet, GDC-0032 Capsule
Drug
Lead sponsor
Genentech, Inc.
Industry
Eligibility
18 Years to 55 Years
Enrollment
76 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Feb 1, 2017 · Synced Oct 19, 2026, 6:11 PM EDT
Withdrawn Not applicable Interventional Accepts healthy volunteers

Weight Loss Using a Feedback Device in Obese People With the Metabolic Syndrome

NCT03491930
View directory record Official record
Conditions
Weight Loss, Obesity, Pre-Diabetes, Metabolic Syndrome
Interventions
VA MOVE! Coach app, Telephone Coaching, Standard of Care for weight loss.
Device · Behavioral
Lead sponsor
Rockefeller University
Other
Eligibility
40 Years to 70 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Oct 24, 2018 · Synced Oct 19, 2026, 6:11 PM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

Snack Food Reinforcement in Obese and Non-obese Women

NCT00837694
View directory record Official record
Conditions
Obesity
Interventions
Not listed
Lead sponsor
State University of New York at Buffalo
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
65 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Aug 1, 2019 · Synced Oct 19, 2026, 6:11 PM EDT