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

Supporting Habit Formation to Attenuate Prefrailty in Elders: Pilot Study

NCT04140890
View directory record Official record
Conditions
Frailty
Interventions
Habit Formation, Education
Behavioral
Lead sponsor
Wayne State University
Other
Eligibility
55 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Nov 22, 2020 · Synced Sep 3, 2026, 9:49 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Sugary Drinks Counter-marketing Messages

NCT05953194
View directory record Official record
Conditions
Obesity, Weight Prejudice, Weight Gain, Dietary Habits
Interventions
Exposure to counter-marketing messages, Exposure to traditional health messages, Exposure to control (neutral) messages
Behavioral
Lead sponsor
Stanford University
Other
Eligibility
18 Years and older
Enrollment
2,184 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated Feb 27, 2024 · Synced Sep 3, 2026, 9:49 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Preventing Early Childhood Obesity, Part 1: Long-term Follow-up

NCT05424471
View directory record Official record
Conditions
Obesity, Water; Lack of, Childhood Obesity, Feeding Behavior, Mother-Child Relations, Dietary Habits
Interventions
Family Spirit Nurture (FSN), Control Group - Vehicle Safety
Behavioral · Other
Lead sponsor
Johns Hopkins Bloomberg School of Public Health
Other
Eligibility
13 Years and older · Female only
Enrollment
110 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Shiprock, New Mexico
Source: ClinicalTrials.gov public record
Updated Aug 20, 2023 · Synced Sep 3, 2026, 9:49 PM EDT
Completed Not applicable Interventional

Effects of School Gardens on Children's Diet, Nutritional Knowledge, Etc.

NCT02166034
View directory record Official record
Conditions
Dietary Habits
Interventions
garden intervention
Behavioral
Lead sponsor
Cornell University
Other
Eligibility
6 Years to 14 Years
Enrollment
3,531 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
4
States / cities
Little Rock, Arkansas • Osceola, Iowa • Ithaca, New York + 1 more
Source: ClinicalTrials.gov public record
Updated Jun 17, 2014 · Synced Sep 3, 2026, 9:49 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Plant-Based Defaults

NCT06554743
View directory record Official record
Conditions
Choice Behavior, Dietary Habits
Interventions
Default Veg, Default Meat
Behavioral
Lead sponsor
Arizona State University
Other
Eligibility
18 Years and older
Enrollment
365 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated Jul 14, 2025 · Synced Sep 3, 2026, 9:49 PM EDT
Completed Not applicable Interventional

Adaptive Symptom Care Using Fish-Based Nutritional Directives Post Breast Cancer

NCT04293874
View directory record Official record
Conditions
Fatigue, Depression, Pain, Sleep Disturbance, Stress, Survivorship, Breast Cancer, Dietary Habits
Interventions
Personalized Meal Plan, Dietary Omega-3LC intervention
Behavioral
Lead sponsor
University of Connecticut
Other
Eligibility
35 Years to 70 Years · Female only
Enrollment
98 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Hartford, Connecticut
Source: ClinicalTrials.gov public record
Updated Sep 8, 2025 · Synced Sep 3, 2026, 9:49 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Characterization of Metabolic Biomarkers in Varying Subjects

NCT01199692
View directory record Official record
Conditions
Obesity, Type 2 Diabetes
Interventions
Not listed
Lead sponsor
CPL Associates
Other
Eligibility
18 Years to 100 Years
Enrollment
250 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2022
U.S. locations
1
States / cities
Williamsville, New York
Source: ClinicalTrials.gov public record
Updated Mar 13, 2023 · Synced Sep 3, 2026, 9:49 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 3, 2026, 9:49 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Adhering to Dietary Approaches for Personal Taste (ADAPT)

NCT03226938
View directory record Official record
Conditions
Dietary Habits
Interventions
Not listed
Lead sponsor
Tufts University
Other
Eligibility
18 Years and older
Enrollment
3,001 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2022
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 14, 2022 · Synced Sep 3, 2026, 9:49 PM EDT
Terminated Not applicable Interventional

Measurements From Stool to Support Dietary Change

NCT04037306
View directory record Official record
Conditions
Diet Habit, Feeding Behavior, Behavior, Health
Interventions
Butyrate Feedback, Fiber Feedback
Behavioral
Lead sponsor
Duke University
Other
Eligibility
18 Years to 80 Years
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Sep 1, 2020 · Synced Sep 3, 2026, 9:49 PM EDT
Completed Not applicable Interventional Results available

Utilizing Protein During Weight Loss to Impact Physical Function

NCT03074643
View directory record Official record
Conditions
Obesity, Weight Loss, Diet Modification, Aging, Weight Change, Body, Dietary Habits
Interventions
Weight loss intervention months 0-6, Exercise intervention months 0-6, Carbohydrate supplement for months 0-6, Protein supplement for months 0-6, Protein supplement for follow-up months 7-18
Behavioral · Dietary Supplement
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
65 Years to 85 Years
Enrollment
187 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2022
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated May 21, 2023 · Synced Sep 3, 2026, 9:49 PM EDT
Completed Not applicable Interventional

Individualized Diet Improvement Program for Weight Loss and Maintenance, Cohort 2

NCT04605640
View directory record Official record
Conditions
Obesity, Overweight, Weight Loss, Diet Habit
Interventions
Weight Management Intervention
Behavioral
Lead sponsor
University of Illinois at Urbana-Champaign
Other
Eligibility
18 Years to 70 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Urbana, Illinois
Source: ClinicalTrials.gov public record
Updated Jul 22, 2021 · Synced Sep 3, 2026, 9:49 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Study to Evaluate the Efficacy of YOUR SUPER Detox Bundle to Improve Perceived Well Being and Promote Adaptation of Healthy Dietary Choices

NCT05303207
View directory record Official record
Conditions
Eating Habit, Healthy Diet
Interventions
YOUR SUPER Detox Bundle
Dietary Supplement
Lead sponsor
Your Super, INC.
Industry
Eligibility
18 Years to 55 Years
Enrollment
38 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Santa Monica, California
Source: ClinicalTrials.gov public record
Updated Jun 13, 2022 · Synced Sep 3, 2026, 9:49 PM EDT
Completed Not applicable Interventional

Club Fit: Physical Activity and Healthy Eating at an After School Program

NCT03189979
View directory record Official record
Conditions
Childhood Obesity, Physical Activity, Dietary Habits
Interventions
Physical activity and healthy eating intervention
Behavioral
Lead sponsor
Mayo Clinic
Other
Eligibility
8 Years to 17 Years
Enrollment
61 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 15, 2017 · Synced Sep 3, 2026, 9:49 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of a Microalgae Extract Dietary Supplement on Gut Health, Anxiety, and Immune Function

NCT06425094
View directory record Official record
Conditions
Gastrointestinal Problem, Anxiety, Stress, Gastrointestinal Symptoms
Interventions
Microalgae Extract Capsules, Placebo
Dietary Supplement
Lead sponsor
Colorado State University
Other
Eligibility
18 Years to 55 Years
Enrollment
62 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Fort Collins, Colorado
Source: ClinicalTrials.gov public record
Updated Feb 16, 2026 · Synced Sep 3, 2026, 9:49 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

What to Eat for Lunch? A Pilot Study to Improve Healthier Eating at Work

NCT01674751
View directory record Official record
Conditions
Dietary Habits
Interventions
Pre-ordering program
Other
Lead sponsor
Albert Einstein Healthcare Network
Other
Eligibility
18 Years and older
Enrollment
31 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 23, 2014 · Synced Sep 3, 2026, 9:49 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Project humAn dieTary daTa rEtuRN

NCT06266689
View directory record Official record
Conditions
Diet Habit
Interventions
Personalized Diet Information
Behavioral
Lead sponsor
Duke University
Other
Eligibility
Up to 12 Months
Enrollment
600 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 28, 2026 · Synced Sep 3, 2026, 9:49 PM EDT
Completed No phase listed Observational

The SEEA (SCI Energy Expenditure and Activity) Study

NCT04748835
View directory record Official record
Conditions
Spinal Cord Injuries, Obesity, Metabolic Syndrome, Cardiovascular Diseases, Diet Habit
Interventions
Not listed
Lead sponsor
Baylor Research Institute
Other
Eligibility
18 Years and older
Enrollment
42 participants
Timeline
2018 – 2022
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Mar 4, 2026 · Synced Sep 3, 2026, 9:49 PM EDT
Completed Not applicable Interventional

FODMAP Reintroduction in Irritable Bowel Syndrome

NCT03245645
View directory record Official record
Conditions
Irritable Bowel Syndrome With Diarrhea, Irritable Bowel Syndrome With Mixed Bowel Habits
Interventions
Dietary Intervention
Other
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2023
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jul 10, 2023 · Synced Sep 3, 2026, 9:49 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 3, 2026, 9:49 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

PREMIER: PREvention of Metabolic Illness Through prEcision nutRition

NCT04148482
View directory record Official record
Conditions
Obesity, Type 2 Diabetes, Metabolic Syndrome, Diet Habit, Nutritional and Metabolic Disease, Food Preferences
Interventions
Dietary intervention
Other
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
21 Years to 65 Years
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 22, 2025 · Synced Sep 3, 2026, 9:49 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Can Food Timing Reduce Your Diabetes Risk?

NCT05862818
View directory record Official record
Conditions
Dietary Habits
Interventions
Day shift protocol - Diet order A-B, Day shift protocol - Diet order B-A, Night shift protocol - Diet order A-B, Night shift protocol - Diet order B-A
Behavioral
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years to 45 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2028
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 5, 2025 · Synced Sep 3, 2026, 9:49 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 3, 2026, 9:49 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Dietary Fiber and Time Restricted Eating

NCT07219706
View directory record Official record
Conditions
Diet Habits, Cancer Prevention
Interventions
Time Restricted Eating, Group education, Counseling
Behavioral
Lead sponsor
University of Oklahoma
Other
Eligibility
18 Years and older
Enrollment
90 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Jul 5, 2026 · Synced Sep 3, 2026, 9:49 PM EDT