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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Diet Habit Clear all
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 28, 2026, 4:57 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

ENRICH Nurse-Family Partnership Study

NCT05798039
View directory record Official record
Conditions
Blood Pressure, Body Composition, Blood Sugar, Body Weight, Diet Habit, Physical Inactivity
Interventions
ENRICH
Behavioral
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years and older · Female only
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Mar 17, 2024 · Synced Sep 28, 2026, 4:57 PM EDT
Completed No phase listed Observational Results available

The PortionSize Smartphone App Pilot (PS Pilot)

NCT04494971
View directory record Official record
Conditions
Dietary Habits
Interventions
Not listed
Lead sponsor
Pennington Biomedical Research Center
Other
Eligibility
18 Years to 65 Years
Enrollment
15 participants
Timeline
2020
U.S. locations
1
States / cities
Baton Rouge, Louisiana
Source: ClinicalTrials.gov public record
Updated Nov 18, 2024 · Synced Sep 28, 2026, 4:57 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

COVID-19 Health Adjustments in Nutrition, General Wellness, and Exercise

NCT07128095
View directory record Official record
Conditions
COVID-19, Sleep, Immunization; Infection, Physical Inactivity, Blood Pressure, Diet Habit, Mental Health Wellness 1
Interventions
Not listed
Lead sponsor
Indiana University
Other
Eligibility
18 Years to 75 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Bloomington, Indiana
Source: ClinicalTrials.gov public record
Updated Oct 29, 2025 · Synced Sep 28, 2026, 4:57 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Examining Validity and Sensitivity of Pressure-Mediated Reflection Spectroscopy

NCT04056624
View directory record Official record
Conditions
Dietary Habits, Diet, Healthy
Interventions
High carotenoid juice, Placebo control - Apple juice
Dietary Supplement
Lead sponsor
East Carolina University
Other
Eligibility
18 Years to 65 Years
Enrollment
162 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
3
States / cities
Minneapolis, Minnesota • Greenville, North Carolina • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jun 14, 2023 · Synced Sep 28, 2026, 4:57 PM EDT
Active, not recruiting Not applicable Interventional

Plant-based Diet for Kidney Transplant Recipients

NCT06186843
View directory record Official record
Conditions
Kidney Disease, Chronic, Transplant Complication, Hypertension, Diabetes Mellitus, Metabolic Syndrome, Inflammation, Kidney Transplant Failure, Dietary Habits
Interventions
Plant-based diet
Behavioral
Lead sponsor
George Washington University
Other
Eligibility
18 Years to 80 Years
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated May 21, 2026 · Synced Sep 28, 2026, 4:57 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

SipSmarter: A Nutrition Literacy Approach to Reducing Sugary Beverages

NCT02193009
View directory record Official record
Conditions
Dietary Habits, Physical Activity
Interventions
SipSmarter, MoveMore
Behavioral
Lead sponsor
Virginia Polytechnic Institute and State University
Other
Eligibility
18 Years and older
Enrollment
304 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2015
U.S. locations
1
States / cities
Blacksburg, Virginia
Source: ClinicalTrials.gov public record
Updated Apr 26, 2022 · Synced Sep 28, 2026, 4:57 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Ultra-Processed Foods and Executive Function

NCT06518863
View directory record Official record
Conditions
Diet Habit
Interventions
Education
Behavioral
Lead sponsor
Oklahoma State University
Other
Eligibility
18 Years to 55 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
Stillwater, Oklahoma
Source: ClinicalTrials.gov public record
Updated Feb 3, 2026 · Synced Sep 28, 2026, 4:57 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Comparison of Lifestyle Markers Between Women With and Without Polycystic Ovary Syndrome

NCT01859663
View directory record Official record
Conditions
Polycystic Ovary Syndrome, Dietary Habits, Physical Activity
Interventions
Not listed
Lead sponsor
Cornell University
Other
Eligibility
18 Years to 48 Years · Female only
Enrollment
126 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2022
U.S. locations
3
States / cities
Ithaca, New York • Rochester, New York
Source: ClinicalTrials.gov public record
Updated Feb 8, 2024 · Synced Sep 28, 2026, 4:57 PM EDT
Terminated Not applicable Interventional

Continuous Glucose Monitoring and Hass Avocado Trial ("CHAT")

NCT05293340
View directory record Official record
Conditions
Dietary Habits, Diabetes Mellitus, Type 2
Interventions
Avocado Vouchers
Dietary Supplement
Lead sponsor
Sansum Diabetes Research Institute
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Santa Barbara, California
Source: ClinicalTrials.gov public record
Updated Nov 29, 2023 · Synced Sep 28, 2026, 4:57 PM EDT
Completed No phase listed Observational

Dietary Impact on Continuous Glucose Monitoring

NCT05845827
View directory record Official record
Conditions
Glucose Metabolism Disorders, Dietary Habits, Pediatric ALL, Adult ALL
Interventions
Not listed
Lead sponsor
Dartmouth-Hitchcock Medical Center
Other
Eligibility
14 Years to 22 Years
Enrollment
30 participants
Timeline
2023
U.S. locations
1
States / cities
Lebanon, New Hampshire
Source: ClinicalTrials.gov public record
Updated Feb 28, 2024 · Synced Sep 28, 2026, 4:57 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Dietary Protein Preferences of Adolescent Athletes

NCT06704477
View directory record Official record
Conditions
Diet Habit
Interventions
Survey
Other
Lead sponsor
PepsiCo Global R&D
Industry
Eligibility
12 Years to 19 Years
Enrollment
161 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
Bradenton, Florida
Source: ClinicalTrials.gov public record
Updated Jan 2, 2025 · Synced Sep 28, 2026, 4:57 PM EDT
Completed Not applicable Interventional

Koa Family: California's Obesity Prevention Project

NCT03605888
View directory record Official record
Conditions
Weight Loss, Diet Habit, Physical Activity, Overweight and Obesity
Interventions
Koa Family
Behavioral
Lead sponsor
University of California, Davis
Other
Eligibility
18 Years to 47 Years · Female only
Enrollment
149 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Jul 22, 2020 · Synced Sep 28, 2026, 4:57 PM EDT
Completed Not applicable Interventional Results available

Tanglewood to Table: A Walking Farmer's Market Group and Control

NCT03567252
View directory record Official record
Conditions
Dietary Habits
Interventions
Walking Group
Behavioral
Lead sponsor
Dawn Brewer
Other
Eligibility
18 Years and older
Enrollment
157 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Jul 22, 2021 · Synced Sep 28, 2026, 4:57 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 28, 2026, 4:57 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Assessing Dietary Requirements in Relation to Resting Metabolic Rate in Spinal Cord Injury

NCT03518892
View directory record Official record
Conditions
Spinal Cord Injuries, Dietary Habits
Interventions
Resting Metabolic Rate, Body Composition, Dietary Assessment
Diagnostic Test · Behavioral
Lead sponsor
Milton S. Hershey Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Hershey, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 15, 2020 · Synced Sep 28, 2026, 4:57 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Ellagic Acid, Urolithin and Colonic Microbial Communities Affected by Walnut Consumption

NCT04066816
View directory record Official record
Conditions
Colo-rectal Cancer, Colon Cancer, Diet Habit
Interventions
Walnuts
Other
Lead sponsor
UConn Health
Other
Eligibility
50 Years to 65 Years
Enrollment
47 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Farmington, Connecticut
Source: ClinicalTrials.gov public record
Updated Nov 25, 2021 · Synced Sep 28, 2026, 4:57 PM EDT
Completed No phase listed Observational

Role of Dietary Habits in Efficacy of Bariatric Surgery - Study A

NCT03470558
View directory record Official record
Conditions
Bariatric Surgery, Sleeve Gastrectomy, Obesity
Interventions
Dietary habits
Other
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
21 Years to 60 Years
Enrollment
290 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2025
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 7, 2025 · Synced Sep 28, 2026, 4:57 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

The UnProcessed Pantry Project (UP3)

NCT04241133
View directory record Official record
Conditions
Diet, Healthy, Diet Habit, Disease, Chronic, Health Behavior, Rural Health
Interventions
The UnProcessed Pantry Project (UP3)
Behavioral
Lead sponsor
Montana State University
Other
Eligibility
18 Years and older
Enrollment
78 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Bozeman, Montana
Source: ClinicalTrials.gov public record
Updated May 1, 2022 · Synced Sep 28, 2026, 4:57 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Evaluating Consumer m-Health Services for User Engagement and Health Promotion: An Organizational Field Experiment

NCT02206893
View directory record Official record
Conditions
Dietary Habits, Compliance Behavior
Interventions
Self-monitoring via Smartphone, Peer support via Smartphone, Professional support via Smartphone, Self-monitoring via Web (Static)
Behavioral
Lead sponsor
Carnegie Mellon University
Other
Eligibility
18 Years and older
Enrollment
425 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 27, 2015 · Synced Sep 28, 2026, 4:57 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Interaction of Salivary Proteins and Polyphenols

NCT03501238
View directory record Official record
Conditions
Diet Habit, Diet Modification, Taste, Altered, Saliva Altered
Interventions
Chocolate Milk, Chocolate milk substitute, Chocolate milk substitute with gelatin
Other
Lead sponsor
Purdue University
Other
Eligibility
18 Years to 45 Years
Enrollment
63 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated May 24, 2023 · Synced Sep 28, 2026, 4:57 PM EDT
Not listed Not applicable Interventional

Towards Understanding the Relationship Between Meals and Blood Biomarkers

NCT05295706
View directory record Official record
Conditions
Type 2 Diabetes
Interventions
Counterfactual Intervention
Behavioral
Lead sponsor
Texas A&M University
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022
U.S. locations
1
States / cities
College Station, Texas
Source: ClinicalTrials.gov public record
Updated May 19, 2022 · Synced Sep 28, 2026, 4:57 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Internal Cues Versus External Cues for Eating and Activity

NCT04025099
View directory record Official record
Conditions
Eating Behavior, Body Image, Diet Habit, Dietary Habits
Interventions
Internal Cues, External Cues
Other
Lead sponsor
University of Delaware
Other
Eligibility
18 Years to 26 Years · Female only
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Newark, Delaware
Source: ClinicalTrials.gov public record
Updated Apr 26, 2021 · Synced Sep 28, 2026, 4:57 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Preliminary Effect of Food Processing and Sweeteners on Glycemic and Metabolic Measures

NCT05658757
View directory record Official record
Conditions
Blood Sugar; High, Blood Pressure, Dietary Habits
Interventions
Regular sweetened commercial foods, Allulose sweetened commercial foods, Whole and minimally processed and sweetened foods
Other
Lead sponsor
University of California, Irvine
Other
Eligibility
20 Years to 99 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Irvine, California
Source: ClinicalTrials.gov public record
Updated May 2, 2023 · Synced Sep 28, 2026, 4:57 PM EDT