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Showing 1–24 of 151 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Dietary Habits Clear all
Completed Not applicable Interventional Accepts healthy volunteers Results available

Impact of Warnings on Sugar-Sweetened Beverages

NCT04223687
View directory record Official record
Conditions
Dietary Habits
Interventions
Sugar-Sweetened Beverage Warning Label, Neutral label
Other
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years and older
Enrollment
326 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 31, 2021 · Synced Sep 10, 2026, 2:25 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Correlational and Intervention Effects of Egg Consumption on Macular Carotenoids, Cognition, and Achievement During Childhood

NCT03521349
View directory record Official record
Conditions
Diet Habit, Cognitive Control
Interventions
Whole Egg Intervention, Egg White Control
Other
Lead sponsor
University of Illinois at Urbana-Champaign
Other
Eligibility
7 Years to 12 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Urbana, Illinois
Source: ClinicalTrials.gov public record
Updated Apr 14, 2020 · Synced Sep 10, 2026, 2:25 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Nutricity: A Pilot Study to Improve Parental Nutrition Literacy

NCT03673267
View directory record Official record
Conditions
Dietary Habits, Dietary Modification, Literacy, Knowledge, Attitudes, Practice
Interventions
Nutricity
Behavioral
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
18 Years and older
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Sep 3, 2019 · Synced Sep 10, 2026, 2:25 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Adaptation and Validation of a Nutrition Literacy Assessment Instrument

NCT02920099
View directory record Official record
Conditions
Dietary Habits
Interventions
Nutrition Literacy Assessment Instrument (NLAI)
Other
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
18 Years and older
Enrollment
450 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2016
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Sep 29, 2016 · Synced Sep 10, 2026, 2:25 PM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

PortionSize Study 2 Free-Living Evaluation

NCT05166226
View directory record Official record
Conditions
Dietary Habits
Interventions
Not listed
Lead sponsor
Pennington Biomedical Research Center
Other
Eligibility
18 Years to 62 Years
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2026
U.S. locations
1
States / cities
Baton Rouge, Louisiana
Source: ClinicalTrials.gov public record
Updated May 12, 2026 · Synced Sep 10, 2026, 2:25 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Impact of Sleep Extension in Adolescents

NCT03500458
View directory record Official record
Conditions
Insulin Sensitivity, Sleep, Dietary Habits
Interventions
Sleep Extension
Behavioral
Lead sponsor
University of Colorado, Denver
Other
Eligibility
14 Years to 19 Years
Enrollment
75 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2025
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Sep 30, 2024 · Synced Sep 10, 2026, 2:25 PM EDT
Completed Not applicable Interventional Results available

Tanglewood Trail Walking Program in Rural Kentucky 2017

NCT03495648
View directory record Official record
Conditions
Dietary Habits
Interventions
walking group led by a community organizer
Behavioral
Lead sponsor
Dawn Brewer
Other
Eligibility
18 Years to 65 Years
Enrollment
123 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Nov 16, 2021 · Synced Sep 10, 2026, 2:25 PM EDT
Completed Not applicable Interventional

Sip and Snack Better (SSB) Study: Improving Added Sugar in Adolescents

NCT07027865
View directory record Official record
Conditions
Dietary Habits, Diet, Healthy
Interventions
Sip & Snack Better (SSB) Intervention, Sip & Snack Better (SSB) Tech-Only Comparison
Behavioral · Other
Lead sponsor
Temple University
Other
Eligibility
12 Years to 16 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 4, 2026 · Synced Sep 10, 2026, 2:25 PM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

PortionSize Study 1 Laboratory-based Evaluation)

NCT04700904
View directory record Official record
Conditions
Dietary Habits
Interventions
Not listed
Lead sponsor
Pennington Biomedical Research Center
Other
Eligibility
18 Years to 70 Years
Enrollment
43 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
1
States / cities
Baton Rouge, Louisiana
Source: ClinicalTrials.gov public record
Updated Jan 26, 2025 · Synced Sep 10, 2026, 2:25 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Exogenous and Endogenous Risk Factors for Early-onset Colorectal Cancer

NCT05732623
View directory record Official record
Conditions
Colorectal Cancer, Early Onset Colorectal Cancer, Diet Habit, Risk Reduction
Interventions
Semi Quantitative Food Frequency Questionnaire (SQFFQ)
Behavioral
Lead sponsor
San Raffaele University
Other
Eligibility
18 Years to 49 Years
Enrollment
2,300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2035
U.S. locations
2
States / cities
Denver, Colorado • Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Apr 23, 2026 · Synced Sep 10, 2026, 2:25 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Healthy Eating Education for Latinos

NCT04724382
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
2019 – 2021
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 25, 2023 · Synced Sep 10, 2026, 2:25 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Dietary Assessment Study Via Digital Images

NCT03267004
View directory record Official record
Conditions
Diet Habit
Interventions
Dietary Assessment of Meal A using images taken by Sony Smarteyeglass, Dietary Assessment of Meal B using Images taken by Sony Smarteyeglass
Device
Lead sponsor
The University of Tennessee, Knoxville
Other
Eligibility
18 Years to 65 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2020
U.S. locations
1
States / cities
Knoxville, Tennessee
Source: ClinicalTrials.gov public record
Updated Apr 7, 2025 · Synced Sep 10, 2026, 2:25 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

PREDICT 2: Personalized Responses to Dietary Composition Trial 2

NCT03983733
View directory record Official record
Conditions
Diabetes, Heart Diseases, Diet Habit, Diet Modification, Microbial Colonization, Healthy, Obesity, Metabolism
Interventions
Dietary Intervention
Other
Lead sponsor
Zoe Global Limited
Other
Eligibility
18 Years to 70 Years
Enrollment
1,139 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 17, 2022 · Synced Sep 10, 2026, 2:25 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Dietary Intervention to Mitigate Adverse Consequences of Night Work

NCT04868526
View directory record Official record
Conditions
Dietary Habits
Interventions
dietary intervention
Behavioral
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years to 45 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 4, 2025 · Synced Sep 10, 2026, 2:25 PM EDT
Completed Not applicable Interventional

Pilot Subsidized and Culturally-adapted Community Supported Agriculture (CSA) Program

NCT06521411
View directory record Official record
Conditions
Diet Habit
Interventions
CSA model
Behavioral
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years to 100 Years
Enrollment
38 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 25, 2024 · Synced Sep 10, 2026, 2:25 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Nutrition for Precision Health, Powered by the All of Us

NCT05701657
View directory record Official record
Conditions
Nutrition, Health, Dietary Habits
Interventions
Diet A, Diet B, Diet C
Other
Lead sponsor
RTI International
Other
Eligibility
18 Years and older
Enrollment
8,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
14
States / cities
Birmingham, Alabama • Davis, California • Los Angeles, California + 7 more
Source: ClinicalTrials.gov public record
Updated Jul 14, 2026 · Synced Sep 10, 2026, 2:25 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Relationship Between Diet, Lifestyle, and the Severity of Coronary Artery Disease

NCT02382250
View directory record Official record
Conditions
Dietary Habits, Coronary Artery Disease, Lifestyle
Interventions
Survey
Behavioral
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years and older
Enrollment
440 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2017
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Sep 10, 2017 · Synced Sep 10, 2026, 2:25 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Daily Blood Glucose Trends in Patients at Risk for Diabetes

NCT06000735
View directory record Official record
Conditions
Stress, Blood Sugar; High, Cholesterol, Elevated, Diet Habit
Interventions
7-Day Continuous Glucose Monitoring with Abbott Freestyle Libre 2
Device
Lead sponsor
Karol E. Watson, MD
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Aug 20, 2023 · Synced Sep 10, 2026, 2:25 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Translational Health After School Program on Health-Related Knowledge/Behaviors and Exercise Perception

NCT02932813
View directory record Official record
Conditions
Changes in Physical Fitness, Changes in Diet, Food, and Nutrition Habits, Changes in Child Health
Interventions
THINK Program
Behavioral
Lead sponsor
University of Miami
Other
Eligibility
8 Years to 12 Years
Enrollment
73 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
Coral Gables, Florida
Source: ClinicalTrials.gov public record
Updated Oct 16, 2017 · Synced Sep 10, 2026, 2:25 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Daily Habits & Consumer Preferences Study

NCT05402137
View directory record Official record
Conditions
Obesity
Interventions
Weight stigma intervention
Behavioral
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years and older
Enrollment
330 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jan 19, 2026 · Synced Sep 10, 2026, 2:25 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Eco-labels on Restaurant Menus

NCT06584539
View directory record Official record
Conditions
Nutrition, Food Selection, Food Preferences, Dietary Habits, Healthy Diet
Interventions
Eco-Labels
Behavioral
Lead sponsor
Harvard Pilgrim Health Care
Other
Eligibility
18 Years and older
Enrollment
3,147 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 20, 2025 · Synced Sep 10, 2026, 2:25 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Tanglewood Trail Walking Program in Rural Kentucky 2020

NCT05002985
View directory record Official record
Conditions
Dietary Habits
Interventions
walking group led by a community organizer
Behavioral
Lead sponsor
Dawn Brewer
Other
Eligibility
18 Years to 65 Years
Enrollment
49 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Nov 4, 2021 · Synced Sep 10, 2026, 2:25 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Assessing Adherence to Digital Health Technologies Among Hispanic/Latino Adults With or At Risk of Type 2 Diabetes:

NCT04820348
View directory record Official record
Conditions
Diabetes Mellitus, Type 2, Depression, Anxiety, Diet Habit
Interventions
Not listed
Lead sponsor
Sansum Diabetes Research Institute
Other
Eligibility
18 Years and older
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Santa Barbara, California
Source: ClinicalTrials.gov public record
Updated Oct 26, 2022 · Synced Sep 10, 2026, 2:25 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of an 8-day Advanced Meditation, Samyama on Physical, Psychological and Spiritual Wellbeing ,and Associated Neural Mechanisms

NCT04366544
View directory record Official record
Conditions
Mental Health Wellness 1, Happiness, Depression, Consciousness, Level Altered, Ecstasy, Dietary Habits, Stress, Inflammatory Bowel Diseases
Interventions
Part A1: Survey, Part A2: Sample collection, Part B:
Other
Lead sponsor
Indiana University
Other
Eligibility
18 Years and older
Enrollment
759 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Oct 2, 2024 · Synced Sep 10, 2026, 2:25 PM EDT