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ClinicalTrials.gov public records Last synced Oct 19, 2026, 5:05 PM EDT

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Showing 1–24 of 181 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Fast food diet Clear all
Completed Not applicable Interventional

Can Neural Network Instability in Schizophrenia be Improved With a Very Low Carbohydrate Ketogenic Diet?

NCT05268809
View directory record Official record
Conditions
Schizophrenia, Bipolar Disorder
Interventions
Ketogenic diet
Other
Lead sponsor
Northern California Institute of Research and Education
Other
Eligibility
18 Years to 65 Years
Enrollment
71 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jan 12, 2026 · Synced Oct 19, 2026, 5:05 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Evaluation of a Fasting Mimicking Diet

NCT04150159
View directory record Official record
Conditions
Coronary Artery Disease
Interventions
FMD Arm
Dietary Supplement
Lead sponsor
Hypertension Institute, Nashville
Other
Eligibility
35 Years to 75 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jul 31, 2020 · Synced Oct 19, 2026, 5:05 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Deliver-EE: Evaluating Effects of Meal Delivery

NCT05357261
View directory record Official record
Conditions
Healthy
Interventions
Wellness Check and Socialization, Prepared Meals
Behavioral · Other
Lead sponsor
Brown University
Other
Eligibility
66 Years and older
Enrollment
2,300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2028
U.S. locations
14
States / cities
San Diego, California • Clearwater, Florida • Jacksonville, Florida + 11 more
Source: ClinicalTrials.gov public record
Updated Oct 2, 2026 · Synced Oct 19, 2026, 5:05 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Short-term Effects of Caffeine and a Multi-ingredient Pre-workout on Exercise Performance

NCT07024940
View directory record Official record
Conditions
Coffee, Anthocyanins, Exercise Performance
Interventions
Ethiopian Coffee, Supplement, Water (Placebo)
Other · Dietary Supplement
Lead sponsor
St. Louis University
Other
Eligibility
18 Years to 35 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Sep 28, 2026 · Synced Oct 19, 2026, 5:05 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Assessment and Educational Intervention to Reduce Ultra-processed Food Consumption in Pediatric Patients With IBD

NCT07224113
View directory record Official record
Conditions
IBD, Crohn Disease (CD), Ulcerative Colitis (UC), Inflammatory Bowel Disease (IBD), Ultra Processed Food, Nutrition Assessment, DGBI
Interventions
Handout-Only Intervention, Handout + Video Intervention
Behavioral
Lead sponsor
Connecticut Children's Medical Center
Other
Eligibility
10 Years to 21 Years
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Hartford, Connecticut
Source: ClinicalTrials.gov public record
Updated Jul 16, 2026 · Synced Oct 19, 2026, 5:05 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Ketogenic Diet Health and Longevity

NCT05939011
View directory record Official record
Conditions
Ketogenic Dieting, Ketoses, Metabolic, Ketosis
Interventions
Well-formulated Ketogenic Diet
Behavioral
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
30 Years to 55 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Nov 28, 2023 · Synced Oct 19, 2026, 5:05 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Evaluation of the Effect of Fasting and Exercise on Uptake of Tc-99m Sestamibi in Breast Tissue

NCT01944215
View directory record Official record
Conditions
Molecular Imaging
Interventions
Meal, Exercise, Sestamibi, Caffeine Tablet, External Heating
Dietary Supplement · Other · Radiation + 1 more
Lead sponsor
Mayo Clinic
Other
Eligibility
40 Years to 70 Years · Female only
Enrollment
154 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2015
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Apr 18, 2017 · Synced Oct 19, 2026, 5:05 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of a Daily Time-Restricted Feeding Protocol on Diet Quality

NCT04348019
View directory record Official record
Conditions
Diet, Healthy, Weight Change, Body, Dyslipidemias, Blood Pressure
Interventions
Fasting
Behavioral
Lead sponsor
Arizona State University
Other
Eligibility
18 Years and older
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated Dec 2, 2021 · Synced Oct 19, 2026, 5:05 PM EDT
Completed Not applicable Interventional

Water-only Fasting in the Treatment of Hypertension Patients

NCT04515095
View directory record Official record
Conditions
Hypertension
Interventions
Water-only Fasting
Other
Lead sponsor
TrueNorth Health Foundation
Other
Eligibility
30 Years to 75 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Santa Rosa, California
Source: ClinicalTrials.gov public record
Updated Nov 22, 2023 · Synced Oct 19, 2026, 5:05 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Precision Nutrition Impact on Health-Related Behavior Change

NCT04959318
View directory record Official record
Conditions
Metabolic Syndrome
Interventions
Professional nutrition counseling, No professional nutrition counseling
Other
Lead sponsor
Madigan Army Medical Center
Federal
Eligibility
18 Years to 45 Years
Enrollment
138 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Tacoma, Washington
Source: ClinicalTrials.gov public record
Updated Feb 11, 2025 · Synced Oct 19, 2026, 5:05 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Strategies to Augment Ketosis: Ketone Conferred Resiliency Against Sleep Restriction

NCT05519644
View directory record Official record
Conditions
Sleep Deprivation
Interventions
Sleep Deprivation, Heart Rate, Sleep Monitoring, Diet, Exercise Performance, Surveys, McGill Pain Questionnaire, Shortened Profile of Mood States, Pittsburg Sleep Index, Cognitive performance, Marksmanship Performance, Quick Board, Advanced Medical Technologies Inc, Jump Test, CGM/CKM, Blood Draw, Ketone Supplement
Other · Behavioral · Biological + 1 more
Lead sponsor
Ohio State University
Other
Eligibility
18 Years to 40 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Jun 1, 2026 · Synced Oct 19, 2026, 5:05 PM EDT
Recruiting Not applicable Interventional

Well-Formulated Ketogenic Diet Polycystic Kidney Disease

NCT06325644
View directory record Official record
Conditions
Polycystic Kidney Disease
Interventions
Ketogenic Diet, Ketone/Glucose Monitoring, CGM/CKM, Blood Draw, Body Composition, Change in glomerular filtration rate (mg/mmol) via magnetic resonance imaging (MRI) .
Other · Biological
Lead sponsor
Ohio State University
Other
Eligibility
18 Years to 65 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated May 14, 2026 · Synced Oct 19, 2026, 5:05 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Ultra-processed Food Consumption, Gut Microbiota, and Glucose Homeostasis

NCT05358171
View directory record Official record
Conditions
Insulin Sensitivity, 24-hour Glucose Control
Interventions
HIgh UPF controlled diet, No UPF controlled diet
Other
Lead sponsor
Virginia Polytechnic Institute and State University
Other
Eligibility
40 Years to 65 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
Blacksburg, Virginia
Source: ClinicalTrials.gov public record
Updated Jan 14, 2026 · Synced Oct 19, 2026, 5:05 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Resistant Starch in a Beverage on Post-prandial Glycemic and Insulinemic Responses

NCT02161250
View directory record Official record
Conditions
Hyperglycemia, Diabetes, and Obesity
Interventions
Resistant Starch, Control
Dietary Supplement
Lead sponsor
Purdue University
Other
Eligibility
18 Years to 29 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated Jun 12, 2014 · Synced Oct 19, 2026, 5:05 PM EDT
Terminated Not applicable Interventional

Prolonged Nightly Fasting in Fibromyalgia

NCT05581849
View directory record Official record
Conditions
Fibromyalgia
Interventions
Prolonged Nightly Fasting, Health Education Control
Behavioral
Lead sponsor
Arizona State University
Other
Eligibility
18 Years to 65 Years · Female only
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated Apr 6, 2025 · Synced Oct 19, 2026, 5:05 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Nutrition and Physical Activity Counseling for Nontraditional College Students

NCT01412099
View directory record Official record
Conditions
Health Behavior
Interventions
peer counseling, Feedback report
Behavioral
Lead sponsor
Boston Medical Center
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 6, 2012 · Synced Oct 19, 2026, 5:05 PM EDT
Recruiting Not applicable Interventional

Symptoms of Polycystic Ovarian Syndrome Ameliorated by Keto-Adaptation Pilot

NCT07227363
View directory record Official record
Conditions
PCOS (Polycystic Ovary Syndrome)
Interventions
Ketogenic diet, Exogenous Ketone Supplement
Other · Dietary Supplement
Lead sponsor
Ohio State University
Other
Eligibility
18 Years to 40 Years · Female only
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated May 8, 2026 · Synced Oct 19, 2026, 5:05 PM EDT
Recruiting Not applicable Interventional

Time Restricted Eating During Chemotherapy for Breast Cancer

NCT05259410
View directory record Official record
Conditions
Breast Cancer Female
Interventions
TRE, MedTRE
Behavioral
Lead sponsor
University of Illinois at Chicago
Other
Eligibility
25 Years to 99 Years · Female only
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Oct 1, 2025 · Synced Oct 19, 2026, 5:05 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

d13C Added Sugar Intake Biomarker: Determining Validity in Children

NCT02455388
View directory record Official record
Conditions
Validation Studies
Interventions
High added sugar diet, Low added sugar diet
Dietary Supplement
Lead sponsor
Virginia Polytechnic Institute and State University
Other
Eligibility
6 Years to 18 Years
Enrollment
370 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2018
U.S. locations
1
States / cities
Blacksburg, Virginia
Source: ClinicalTrials.gov public record
Updated Feb 26, 2019 · Synced Oct 19, 2026, 5:05 PM EDT
Completed Not applicable Interventional

Screening for and Responding to Food Insecurity Among Infusion Patients

NCT05889780
View directory record Official record
Conditions
Cancer, Diet, Healthy, Nutrition, Healthy
Interventions
Food pantry referrals, No-prep, ready-to-eat meals, Vouchers
Other
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years and older
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Dec 9, 2024 · Synced Oct 19, 2026, 5:05 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Glycemic Load, Metabolism & Obesity in Pregnancy

NCT01287299
View directory record Official record
Conditions
Obesity, Insulin Resistance
Interventions
Low Glycemic Load diet, Low Fat Diet
Other
Lead sponsor
UCSF Benioff Children's Hospital Oakland
Other
Eligibility
18 Years to 40 Years · Female only
Enrollment
64 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2009
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Nov 24, 2020 · Synced Oct 19, 2026, 5:05 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Time Restricted Eating for the Treatment of PCOS

NCT05629858
View directory record Official record
Conditions
Polycystic Ovary Syndrome, Obesity, Overweight
Interventions
6-h Time restricted eating (TRE), Calorie restriction (CR), Control
Other
Lead sponsor
University of Illinois at Chicago
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
76 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 13, 2025 · Synced Oct 19, 2026, 5:05 PM EDT
Recruiting Phase 2 Interventional

Metabolic Interventions (Time-Restricted Eating, GLP1 Receptor Agonist, and Heart Healthy Diet) to Improve Cardiometabolic Health in Prostate Cancer Patients During Androgen Deprivation Therapy, IMPACT-ADT Trial

NCT07202247
View directory record Official record
Conditions
Prostate Carcinoma, Recurrent Prostate Carcinoma
Interventions
Antiandrogen Therapy, Behavioral Intervention, Biospecimen Collection, Cardiac Computerized Tomographic Angiography, Computed Tomography, Electronic Health Record Review, Internet-Based Intervention, Lifestyle Counseling, Medical Device Usage and Evaluation, Nutritional Intervention, Questionnaire Administration, Radiation Therapy, Referral, Semaglutide, Short-Term Fasting, Tirzepatide
Drug · Behavioral · Procedure + 2 more
Lead sponsor
City of Hope Medical Center
Other
Eligibility
30 Years to 79 Years · Male only
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
1
States / cities
Duarte, California
Source: ClinicalTrials.gov public record
Updated Aug 17, 2026 · Synced Oct 19, 2026, 5:05 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Renal Metabolism of Glycolate to Oxalate

NCT04437225
View directory record Official record
Conditions
Healthy
Interventions
Low oxalate controlled Diet, Primed, continuous intravenous infusion of 13C2-Glycolate, Bolus intravenous infusion of 13C2-Glycolate, Oral bolus administration of 13C2-Glycolate
Dietary Supplement · Other
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years to 75 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2030
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Aug 27, 2026 · Synced Oct 19, 2026, 5:05 PM EDT