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Showing 1–23 of 23 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: 24-hour dietary recall Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Investigation of the Ability of a Supplement to Increase Good Bacteria in the Human Intestine and Blood Sugar Levels

NCT01944904
View directory record Official record
Conditions
Pre-diabetic
Interventions
Sugar Pill, XOS 2.8
Dietary Supplement
Lead sponsor
University of California, Los Angeles
Other
Eligibility
20 Years to 70 Years
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Feb 28, 2017 · Synced Sep 1, 2026, 6:38 PM EDT
Completed No phase listed Observational

Feasibility Study of a Web-Based Automated Self-Administered 24-hour Dietary Recall (ASA 24) and a Physical Activity 24-hour Recall

NCT01164254
View directory record Official record
Conditions
Cancer
Interventions
Not listed
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
50 Years to 75 Years
Enrollment
627 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2016
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 16, 2019 · Synced Sep 1, 2026, 6:38 PM EDT
Withdrawn No phase listed Observational

Diet, Physical Activity and Body Composition Changes During R-CHOP

NCT04293900
View directory record Official record
Conditions
Non-Hodgkin Lymphoma, DLBCL, Diffuse Large B Cell Lymphoma
Interventions
24-hour dietary recall, Hand grip strength, International Physical Activity Questionnaire, Patient-reported outcomes survey, Pittsburgh Sleep Quality Index, Functional Assessment of Cancer Treatment - Lymphoma, urine sample (optional), fecal sample (optional)
Other
Lead sponsor
George Washington University
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Oct 5, 2020 · Synced Sep 1, 2026, 6:38 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effects of Snack Size and Variety on Appetite Control, Satiety, and Eating Behavior in Healthy Adults.

NCT03940105
View directory record Official record
Conditions
Snacking
Interventions
Packout
Behavioral
Lead sponsor
Purdue University
Other
Eligibility
18 Years to 55 Years
Enrollment
31 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated Jan 20, 2022 · Synced Sep 1, 2026, 6:38 PM EDT
Completed Not applicable Interventional

Flipped Classroom for Weight Management

NCT06622278
View directory record Official record
Conditions
Obesity, Weight Loss
Interventions
Flipped Classroom
Behavioral
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
18 Years to 75 Years
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Oct 2, 2024 · Synced Sep 1, 2026, 6:38 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Early Childhood Dietary Assessment Study

NCT07227272
View directory record Official record
Conditions
Dietary Assessment
Interventions
Ecological Momentary Assessment, Traditional 24-hour dietary recall
Other
Lead sponsor
The University of Tennessee, Knoxville
Other
Eligibility
2 Years to 5 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Knoxville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jun 7, 2026 · Synced Sep 1, 2026, 6:38 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Gut Microbiota Composition in Hispanic and Non-Hispanic Children.

NCT03990350
View directory record Official record
Conditions
Obesity
Interventions
Fecal Sample Collection, Physical Activity Questionnaire, Food Frequency Questionnaire, 24-hour dietary recall diary
Other
Lead sponsor
Nemours Children's Clinic
Other
Eligibility
6 Years to 12 Years
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Wilmington, Delaware
Source: ClinicalTrials.gov public record
Updated Jun 29, 2020 · Synced Sep 1, 2026, 6:38 PM EDT
Completed No phase listed Observational

National Cancer Institute Food Study

NCT00978406
View directory record Official record
Conditions
Validation Study, Diet Surveys, Nutritional Assessment, Epidemiology, Methodologic Study
Interventions
Not listed
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
20 Years to 70 Years
Enrollment
83 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2020
U.S. locations
1
States / cities
Rockville, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 2, 2020 · Synced Sep 1, 2026, 6:38 PM EDT
Completed Not applicable Interventional

Low Carbohydrate/High Protein Diet to Improve Metabolic Health

NCT03207841
View directory record Official record
Conditions
Spinal Cord, Metabolic Syndrome, Diabetes
Interventions
LC/HP
Other
Lead sponsor
Ohio State University
Other
Eligibility
18 Years to 60 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2022
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Mar 26, 2023 · Synced Sep 1, 2026, 6:38 PM EDT
Recruiting No phase listed Observational

EXploring Inflammation and Social deTerminants Study in Breast Cancer Patients

NCT07478016
View directory record Official record
Conditions
Breast Cancer, Ductal Carcinoma In Situ
Interventions
Survey Assessments, Diet Recall, Blood Biomarker Collection
Other
Lead sponsor
Thomas Jefferson University
Other
Eligibility
18 Years and older · Female only
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2028
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 16, 2026 · Synced Sep 1, 2026, 6:38 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Influence of Factors on Accuracy of Reported Dietary Intake

NCT00939016
View directory record Official record
Conditions
Dietary Assessment, 24-hour Dietary Recall, Dietary Restraint, Social Desirability
Interventions
Lunch meal with 24 hour dietary recall
Other
Lead sponsor
The University of Tennessee, Knoxville
Other
Eligibility
18 Years to 25 Years · Female only
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2011
U.S. locations
1
States / cities
Knoxville, Tennessee
Source: ClinicalTrials.gov public record
Updated Apr 4, 2018 · Synced Sep 1, 2026, 6:38 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effect of Gojiberry Intake (Lycium Barbarium) on Macular Function

NCT03983525
View directory record Official record
Conditions
Macular Pigment Optical Density
Interventions
Goji berry, Lutein + zeaxanthin supplementation
Dietary Supplement
Lead sponsor
University of California, Davis
Other
Eligibility
45 Years to 65 Years
Enrollment
31 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated Jul 22, 2020 · Synced Sep 1, 2026, 6:38 PM EDT
Recruiting No phase listed Observational

Understanding the Effects of Pulmonary Arterial Hypertension on Lean Muscle Mass

NCT07132788
View directory record Official record
Conditions
Pulmonary Hypertension
Interventions
blood draw, Short Performance Physical Battery, Grip strength test, Six minute walk test, Chest CT scan, Dual-Energy X-ray Absorptiometry Scan, Activity monitoring, 24 hour diet recall, Echocardiogram, Quality of Life Questionnaire (emPHasis 10), International Physical Activity Questionnaire Short Form (IPAQ-SF)
Diagnostic Test · Radiation · Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2029
U.S. locations
2
States / cities
Philadelphia, Pennsylvania • Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Aug 31, 2026 · Synced Sep 1, 2026, 6:38 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Controlled Feeding With 24 Hour Recall

NCT06919536
View directory record Official record
Conditions
Evaluate Accuracy 24 Dietary Recall
Interventions
No intervention (observational study)
Other
Lead sponsor
Texas Tech University
Other
Eligibility
18 Years to 65 Years
Enrollment
75 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Lubbock, Texas
Source: ClinicalTrials.gov public record
Updated Nov 17, 2025 · Synced Sep 1, 2026, 6:38 PM EDT
Recruiting Not applicable Interventional

Mediterranean Diet vs no Dietary Intervention for Improving Signs and Symptoms of Psoriasis in Patients Treated With Anti-IL-17 or Anti-IL-23 Inhibitors

NCT06399432
View directory record Official record
Conditions
Psoriasis
Interventions
Mediterranean Diet
Behavioral
Lead sponsor
University Hospitals Cleveland Medical Center
Other
Eligibility
18 Years to 94 Years
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Jun 2, 2026 · Synced Sep 1, 2026, 6:38 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Over-the-counter Dietary Supplements on Kidney Stone Risk

NCT02404701
View directory record Official record
Conditions
Hyperoxaluria
Interventions
Aloe vera with cactus, Cranberry, Green tea extract, Bilberry, Cinnamon, Milk thistle, Turmeric, Aloe vera
Dietary Supplement
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Oct 26, 2016 · Synced Sep 1, 2026, 6:38 PM EDT
Recruiting Phase 2 Interventional

A Clinical Trial of Soluble Fiber for Asthma

NCT06372249
View directory record Official record
Conditions
Asthma in Children
Interventions
Inulin
Drug
Lead sponsor
Phoenix Children's Hospital
Other
Eligibility
6 Years to 17 Years
Enrollment
105 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated Mar 3, 2026 · Synced Sep 1, 2026, 6:38 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Healthy Behaviors Learning Task and Sleep

NCT02910648
View directory record Official record
Conditions
Overweight/Obese Population
Interventions
Modified Go/No-Go Task
Behavioral
Lead sponsor
Johns Hopkins University
Other
Eligibility
20 Years to 55 Years
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2022
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 7, 2022 · Synced Sep 1, 2026, 6:38 PM EDT
Completed Not applicable Interventional

Low Glycemic Load Diet in Patients With Stage I-III Colon Cancer

NCT02129218
View directory record Official record
Conditions
Stage I Colon Cancer, Stage II Colon Cancer, Stage III Colon Cancer, Stage I Rectal Cancer, Stage II Rectal Cancer, Stage III Rectal Cancer
Interventions
questionnaire administration, laboratory biomarker analysis, Standard Dietary Intervention, Intensified Dietary Intervention, Low glycemic load, Medium Glycemic Load
Other · Behavioral
Lead sponsor
Case Comprehensive Cancer Center
Other
Eligibility
18 Years and older
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
2
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Jul 19, 2018 · Synced Sep 1, 2026, 6:38 PM EDT
Completed Phase 1 Interventional

Diet and Behavior in Young Children With Autism

NCT00090428
View directory record Official record
Conditions
Autism, Autistic Disorder
Interventions
Gluten- and casein-free diet, Placebo controlled diet
Behavioral
Lead sponsor
University of Rochester
Other
Eligibility
30 Months to 54 Months
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2009
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Jan 31, 2013 · Synced Sep 1, 2026, 6:38 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Pulse Education and Children

NCT07648446
View directory record Official record
Conditions
Dysbiosis, Cardiometabolic Health Indicators, Education on Feeding and Health Status, Gut Motility
Interventions
Education Only, Education + Pulse Provision, Cooking Class
Other
Lead sponsor
Florida State University
Other
Eligibility
6 Years to 13 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
1
States / cities
Tallahassee, Florida
Source: ClinicalTrials.gov public record
Updated Jun 14, 2026 · Synced Sep 1, 2026, 6:38 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 12, 2025 · Synced Sep 1, 2026, 6:38 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Mobile Food Record on Recall Effects

NCT05228171
View directory record Official record
Conditions
Healthy
Interventions
mCC app
Behavioral
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 65 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Feb 1, 2024 · Synced Sep 1, 2026, 6:38 PM EDT