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ClinicalTrials.gov public records Last synced Nov 15, 2026, 8:12 AM EST

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Showing 289–312 of 741 matching trials from the live ClinicalTrials.gov search.

Filters: Condition: Dietary Intervention Clear all

Conditions: Irritable Bowel Syndrome, Abdominal Pain
Interventions: Low fermentable substrate diet, High fermentable substrate diet; Other
Lead sponsor: Baylor College of Medicine; Other
Eligibility: 7 Years to 17 Years
Enrollment: 40 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2011 – 2017
U.S. locations: 2
States / cities: Houston, Texas

Conditions: Age-Related Macular Degeneration
Interventions: Low glycemic Mediterranean diet behavioral modification; Behavioral
Lead sponsor: Stanford University; Other
Eligibility: 55 Years to 75 Years
Enrollment: 32 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2026 – 2028
U.S. locations: 1
States / cities: Los Angeles, California

Conditions: Metabolic Syndrome, Obesity, Dyslipidemias
Interventions: Carbohydrate restricted group, Standard low fat diet; Other
Lead sponsor: University of Alabama at Birmingham; Other
Eligibility: 10 Years to 18 Years
Enrollment: 30 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2020 – 2021
U.S. locations: 2
States / cities: Birmingham, Alabama

Conditions: Dietary Modification
Interventions: 10 + 20 g protein consumption, 30 g protein breakfast, 10 g protein breakfast; Dietary Supplement · Other
Lead sponsor: Purdue University; Other
Eligibility: 25 Years to 39 Years
Enrollment: 12 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2015 – 2016
U.S. locations: 1
States / cities: West Lafayette, Indiana

Conditions: Prediabetic State, PreDiabetes, Health Knowledge, Attitudes, Practice, Nutrition, Healthy, Acceptability of Health Care, Obesity Prevention
Interventions: One-arm feasibility pilot of a nutrition intervention to recruit, engage, and retain DPP participants in the safety-net setting in Los Angeles; Behavioral
Lead sponsor: Cedars-Sinai Medical Center; Other
Eligibility: 18 Years to 99 Years
Enrollment: 20 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2025 – 2027
U.S. locations: 1
States / cities: Los Angeles, California

Conditions: Overweight, Obesity
Interventions: Behavioral weight loss intervention; Behavioral
Lead sponsor: The University of Tennessee, Knoxville; Other
Eligibility: 21 Years to 65 Years
Enrollment: 50 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2010 – 2011
U.S. locations: 1
States / cities: Knoxville, Tennessee

Conditions: Pediatric Obesity
Interventions: Lifestyle intervention and carotenoid supplements, Lifestyle intervention and placebo; Other
Lead sponsor: Nemours Children's Clinic; Other
Eligibility: 8 Years to 11 Years
Enrollment: 20 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2012 – 2013
U.S. locations: 1
States / cities: Jacksonville, Florida

Conditions: Diabetes Mellitus, Type 2
Interventions: Financial support for healthy foods and free home delivery, Free home delivery; Other
Lead sponsor: Kaiser Permanente; Other
Eligibility: 18 Years and older
Enrollment: 1,007 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2023 – 2026
U.S. locations: 2
States / cities: Pasadena, California • Pleasanton, California

Conditions: Poor Sleep Quality
Interventions: Walnut consumption, HCHS consumption; Other
Lead sponsor: Columbia University; Other
Eligibility: 45 Years to 65 Years
Enrollment: 24 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2024 – 2026
U.S. locations: 1
States / cities: New York, New York

Conditions: Metabolic Syndrome, Protection Against, Diet, Healthy
Interventions: Home-Based Video and Motivational Interviewing Intervention, Read Educate and Develop Youth (READY) Comparison; Behavioral
Lead sponsor: Brown University; Other
Eligibility: 18 Years and older
Enrollment: 257 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2024 – 2027
U.S. locations: 1
States / cities: Providence, Rhode Island

Conditions: Diet Modification, HDL, Inflammation
Interventions: Mediterranean Diet, Fast food diet; Other
Lead sponsor: University of California, Davis; Other
Eligibility: 19 Years to 30 Years
Enrollment: 10 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2016 – 2019
U.S. locations: 1
States / cities: Davis, California

Conditions: Obesity, Dental Caries
Interventions: Sugar Sweetened Beverage Education, Reading Education; Behavioral
Lead sponsor: University of California, San Francisco; Other
Eligibility: 18 Years and older
Enrollment: 82 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2014 – 2015
U.S. locations: 1
States / cities: San Francisco, California

Conditions: Colorectal Cancer
Interventions: Vitamin D intervention, Placebo intervention; Dietary Supplement
Lead sponsor: Baylor University; Other
Eligibility: 18 Years to 79 Years
Enrollment: 43 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2022 – 2023
U.S. locations: 1
States / cities: Waco, Texas

Conditions: Hypertension, Food Insecurity
Interventions: DASH-FV, nutrition counselling only; Other
Lead sponsor: Nemours Children's Clinic; Other
Eligibility: 12 Years to 17 Years
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2026 – 2031
U.S. locations: 1
States / cities: Wilmington, Delaware

Conditions: Type 1 Diabetes Mellitus, Diet Modification, Child, Only
Interventions: Low carbohydrate diet, Very low carbohydrate diet; Other
Lead sponsor: Nemours Children's Clinic; Other
Eligibility: 2 Years to 11 Years
Enrollment: 16 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2018 – 2022
U.S. locations: 1
States / cities: Jacksonville, Florida

Conditions: Diabetes, Heart Diseases, Diet Habit, Diet Modification, Healthy, Obesity, Metabolism, Microbial Colonization
Interventions: Dietary Intervention; Other
Lead sponsor: Zoe Global Limited; Other
Eligibility: 18 Years and older
Enrollment: 250,000 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2020 – 2030
U.S. locations: 1
States / cities: Needham, Massachusetts

Conditions: Diet Quality
Interventions: Nutricity; Behavioral
Lead sponsor: University of Kansas Medical Center; Other
Eligibility: Not listed
Enrollment: 162 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2024 – 2025
U.S. locations: 1
States / cities: Kansas City, Kansas

Conditions: Time Restricted Eating, Diet, Mediterranean
Interventions: Time restricted eating, Mediterranean diet; Behavioral
Lead sponsor: University of California, Berkeley; Other
Eligibility: 18 Years to 65 Years
Enrollment: 300 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2024 – 2029
U.S. locations: 1
States / cities: Berkeley, California

Conditions: Hidradenitis Suppurativa
Interventions: Mediterranean Diet Counseling, Mediterranean Food Support; Behavioral · Other
Lead sponsor: University of North Carolina, Chapel Hill; Other
Eligibility: 18 Years and older
Enrollment: 30 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2026 – 2027
U.S. locations: 1
States / cities: Chapel Hill, North Carolina

Conditions: Hypertension
Interventions: Grocery Vouchers; Behavioral
Lead sponsor: Duke University; Other
Eligibility: 50 Years and older
Enrollment: 97 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2024
U.S. locations: 2
States / cities: New Orleans, Louisiana

Conditions: Insulin Resistance, Obesity, Metabolic Syndrome
Interventions: Fish Oil, Polyphenol Capsules, Corn Oil Capsules, Corn starch capsules, Reduced glycemic index bread products, Market variety bread products; Dietary Supplement · Other
Lead sponsor: University of California, San Diego; Other
Eligibility: 21 Years to 55 Years
Enrollment: 41 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2012 – 2013
U.S. locations: 1
States / cities: San Diego, California

Conditions: Cystic Fibrosis, Respiratory Tract Infections
Interventions: Cholecalciferol; Dietary Supplement
Lead sponsor: Emory University; Other
Eligibility: 16 Years and older
Enrollment: 91 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2011 – 2017
U.S. locations: 5
States / cities: Birmingham, Alabama • Atlanta, Georgia • Iowa City, Iowa + 2 more

Conditions: Diet Modification
Interventions: Low glycemic index diet; Other
Lead sponsor: Sibylle Kranz, PhD, RDN; Other
Eligibility: 2 Years to 5 Years
Enrollment: 20 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2025
U.S. locations: 1
States / cities: Charlottesville, Virginia

Conditions: Cognitive Impairment, Hematologic Malignancy
Interventions: Modified ketogenic diet using an exogenous ketogenic formula, Online cognitive training; Behavioral
Lead sponsor: University of Alabama at Birmingham; Other
Eligibility: 21 Years and older
Enrollment: 80 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2022 – 2027
U.S. locations: 1
States / cities: Birmingham, Alabama

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Delivered Dietary Intervention for Children With Irritable Bowel Syndrome

Feasibility Study of a Remote Behavioral Dietary Intervention in Patients With Early to Intermediate AMD: Glucose Lowering for Vision Extension

Effect of Low Carbohydrate Versus Low Fat Diet in the Treatment of Dyslipidemia in Obese Children With Metabolic Syndrome

Optimizing Meal and Snack Timing to Promote Health

Feasibility of a Nutrition Intervention for Patients With Prediabetes at a Federally Qualified Health Center

Lifestyle, Eating, and Activity Patterns

Family-based Lifestyle Intervention Program and Carotenoid Supplementation for Children With Obesity

Kaiser Permanente Evaluating Nutritional Interventions in Food-Insecure High-Risk Adults Study

Mechanistic Effect of Walnut Consumption on Sleep Quality

Strong Families Start at Home/Familias Fuertes Comienzan en Casa

Effects of Short-term Diet on HDL Composition and Function

Primary Care Beverage Study

Vitamin D Intervention and Associated Changes in the Gut Microbiome and Vitamin D Levels in Healthy Adults

DASH Diet Intervention for Systemic Hypertension in Adolescents

Safety of Low and Very Low Carbohydrate Diets in Young Children With Type 1 Diabetes

Personalized Responses to Dietary Composition Trial 3

Nutricity: An mHealth Nutrition Intervention to Improve Diet Quality Among Latino Children

Healthy Lifestyles for Bipolar Disorder

Mediterranean Dietary Intervention for HS

Food Is Medicine: Makin' Healthy Groceries

Novel Dietary Interventions for Treating Insulin Resistance

Vitamin D for Enhancing the Immune System in Cystic Fibrosis (DISC Study)

Increasing Lean Protein Intake in Preschool-age Children and Assessing Effects on Cognition and Select Health Outcomes

Diet and Cognitive Training in Hematologic Cancer Survivors