Independent directory Public ClinicalTrials.gov records United States
Clinical Trials Finder
Objective public record navigation
Search Results

Search by objective public record fields.

Search by query text, NCT ID, condition, intervention, sponsor, city, state, recruitment status, phase, study type, healthy volunteer eligibility, sex, or age. Results are retrieved from ClinicalTrials.gov and synchronized into the directory. Search pages remain noindex by default.

Clear filters
ClinicalTrials.gov public records Last synced Jun 10, 2026, 7:45 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 1–24 of 36 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Filters: Condition: Microbiome Composition Clear all
Enrolling by invitation Not applicable Interventional Accepts healthy volunteers

Gut Microbiome Response to Long-Haul Travel in Elite Football Players

NCT07585474
View directory record Official record
Conditions
Microbial Composition, Immune Function
Interventions
Probiotic Capsule, Placebo
Drug
Lead sponsor
Sheffield Hallam University
Other
Eligibility
18 Years to 40 Years · Male only
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated May 12, 2026 · Synced Jun 10, 2026, 7:45 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Impact of Protein Source and Polyphenol Complexation in Protein Bars on Metabolic Health

NCT07489118
View directory record Official record
Conditions
Food Acceptance, Metabolic Health, Immune Cells Activity, Microbiome Composition
Interventions
Whey protein bar, Pea protein bar, Pea protein with complexed polyphenols bar, Pea protein with free polyphenols bar
Other
Lead sponsor
North Carolina State University
Other
Eligibility
18 Years to 64 Years
Enrollment
72 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Kannapolis, North Carolina
Source: ClinicalTrials.gov public record
Updated Mar 22, 2026 · Synced Jun 10, 2026, 7:45 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Military Health and Nutrition Examination Study

NCT06380322
View directory record Official record
Conditions
Hypertension, Type 2 Diabetes, Dyslipidemias, Cardiovascular Diseases
Interventions
Not listed
Lead sponsor
Pennington Biomedical Research Center
Other
Eligibility
18 Years and older
Enrollment
650 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
3
States / cities
Fort Campbell, Kentucky • Baton Rouge, Louisiana • Leesville, Louisiana
Source: ClinicalTrials.gov public record
Updated Nov 11, 2025 · Synced Jun 10, 2026, 7:45 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Atopic Dermatitis (AD) and Food Allergy

NCT03168113
View directory record Official record
Conditions
Atopic Dermatitis (AD), Non-atopic Healthy Controls
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
4 Years to 17 Years
Enrollment
62 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated Feb 27, 2018 · Synced Jun 10, 2026, 7:45 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Red Raspberry Polyphenols on Gut Microbiome

NCT03049631
View directory record Official record
Conditions
Healthy Subjects, Pre-diabetes
Interventions
Raspberry and fructooligosaccharide, Raspberry
Dietary Supplement
Lead sponsor
Clinical Nutrition Research Center, Illinois Institute of Technology
Industry
Eligibility
20 Years to 60 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2020
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jul 13, 2020 · Synced Jun 10, 2026, 7:45 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Effects of Fermented Vegetables on Gut Microflora and Inflammation in Women

NCT03407794
View directory record Official record
Conditions
Inflammation, Women's Health, Gastrointestinal Microbiome
Interventions
Fermented vegetable, Non-fermented vegetable
Other
Lead sponsor
University of North Florida
Other
Eligibility
18 Years to 70 Years · Female only
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2021
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Jan 10, 2023 · Synced Jun 10, 2026, 7:45 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Effects of Gallotannins on the Gut Microbiome and How it Affects Inflammatory Markers Among Obese Individuals.

NCT07505212
View directory record Official record
Conditions
Obesity (Disorder)
Interventions
Gallotannin-rich mango, Lactiplantibacillus pentosus (probiotic), No Treatment Added
Dietary Supplement · Other
Lead sponsor
Prairie View A&M University
Other
Eligibility
18 Years to 55 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
Prairie View, Texas
Source: ClinicalTrials.gov public record
Updated Jun 8, 2026 · Synced Jun 10, 2026, 7:45 AM EDT
Terminated No phase listed Observational

Characterization Of the Intestinal Microbiome Evolution After Kidney Transplant Donation or Receipt

NCT03043339
View directory record Official record
Conditions
Renal Transplant
Interventions
Stool Specimen Collection, Anal Swab Sampling, Short Diet Assessment (SDA), NHANES Dietary Screener Questionnaire (DSQ)
Other
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
2
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Jun 25, 2024 · Synced Jun 10, 2026, 7:45 AM 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 Jun 10, 2026, 7:45 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Milk in Life Conditions (MiLC): Bacterial Composition of Human Milk Pumped and Stored in "Real-Life" Conditions

NCT03123874
View directory record Official record
Conditions
Human Milk Microbiome, Bacterial Growth
Interventions
Sterile pump set-up, Mother's Own pump set-up
Device
Lead sponsor
Cornell University
Other
Eligibility
18 Years and older · Female only
Enrollment
52 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
Ithaca, New York
Source: ClinicalTrials.gov public record
Updated May 20, 2019 · Synced Jun 10, 2026, 7:45 AM 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 Jun 10, 2026, 7:45 AM EDT
Active, not recruiting Not applicable Interventional

Gut Microbe Composition, Exercise, and Breast Breast Cancer Survivors

NCT04088708
View directory record Official record
Conditions
Breast Cancer, Gut Microbiome, Exercise, Fatigue
Interventions
Aerobic Exercise Training, Attention Control
Other
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years to 74 Years · Female only
Enrollment
126 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2026
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Sep 15, 2025 · Synced Jun 10, 2026, 7:45 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Protein From Complementary Foods on Infant Growth, Body Composition and Gut Health

NCT02142647
View directory record Official record
Conditions
Infant Growth, Infant Body Fat, Infant Gut Microbiome
Interventions
a high-protein complementary diet with meat, a high-protein complementary diet with dairy
Behavioral
Lead sponsor
University of Colorado, Denver
Other
Eligibility
1 Month to 5 Months
Enrollment
75 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2018
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Jul 9, 2019 · Synced Jun 10, 2026, 7:45 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Influence of SRP With MM on the Composition and Functional Characteristics of Subgingival Microbiome Communities

NCT05422742
View directory record Official record
Conditions
Periodontitis
Interventions
SRP + MM, Scaling and Root Planing (SRP)
Procedure
Lead sponsor
West Virginia University
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2025
U.S. locations
1
States / cities
Morgantown, West Virginia
Source: ClinicalTrials.gov public record
Updated Jul 21, 2025 · Synced Jun 10, 2026, 7:45 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

The Precision Nutrition New York Study

NCT06777498
View directory record Official record
Conditions
Body Composition Changes, Body Weight Changes
Interventions
Whole Grain Intervention then fruits and vegetables, Fruit and Vegetable Intervention and then whole grains
Other
Lead sponsor
Cornell University
Other
Eligibility
21 Years to 50 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Ithaca, New York
Source: ClinicalTrials.gov public record
Updated Jul 10, 2025 · Synced Jun 10, 2026, 7:45 AM EDT
Withdrawn No phase listed Observational Accepts healthy volunteers

Intestinal Microbiome Composition in Infants With Biliary Atresia (BA)

NCT03890536
View directory record Official record
Conditions
Biliary Atresia, Intrahepatic Cholestases, Normal Controls
Interventions
Not listed
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
1 Day to 2 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2032
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Jul 8, 2025 · Synced Jun 10, 2026, 7:45 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Ambrosia: Evaluating the Effects of a Food-As-Medicine Platform on Gut Microbiome Composition and Metabolism

NCT06091813
View directory record Official record
Conditions
Impact of Dietary Chages Directed by Medical Nutrition Therapy on Gut Microbiome Composition
Interventions
Nutrition Counseling
Behavioral
Lead sponsor
Persephone Biosciences
Industry
Eligibility
18 Years to 64 Years
Enrollment
546 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Jul 30, 2025 · Synced Jun 10, 2026, 7:45 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Low Sugar Protein Pacing, Intermittent Fasting Diet in Men and Women

NCT04327141
View directory record Official record
Conditions
Weight Loss, Gut Microbiome, Anti-Aging
Interventions
P-IF, HH
Behavioral
Lead sponsor
Skidmore College
Other
Eligibility
25 Years to 65 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2024
U.S. locations
1
States / cities
Saratoga Springs, New York
Source: ClinicalTrials.gov public record
Updated Apr 7, 2024 · Synced Jun 10, 2026, 7:45 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

PREDICT 2: Personalized Responses to Dietary Composition Trial 2

NCT03983733
View directory record Official record
Conditions
Diabetes, Heart Diseases, Diet Habit, Diet Modification, Microbial Colonization, Healthy, Obesity, Metabolism
Interventions
Dietary Intervention
Other
Lead sponsor
Zoe Global Limited
Other
Eligibility
18 Years to 70 Years
Enrollment
1,139 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 17, 2022 · Synced Jun 10, 2026, 7:45 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Controlled Feeding Experiment

NCT00951756
View directory record Official record
Conditions
Effect of Diet on Microbiome Composition
Interventions
High fat diet
Other
Lead sponsor
James Lewis
Other
Eligibility
18 Years to 40 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2011
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 24, 2013 · Synced Jun 10, 2026, 7:45 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Microbiota Diversity and Composition and Polyphenol Bioavailability

NCT02677649
View directory record Official record
Conditions
Fecal Microbiota
Interventions
cranberry, placebo
Other
Lead sponsor
Tufts University
Other
Eligibility
20 Years to 55 Years
Enrollment
11 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 22, 2017 · Synced Jun 10, 2026, 7:45 AM EDT
Recruiting Not applicable Interventional

Wild Blueberries for Gut, Brain, and Heart Health in Adults With High Blood Pressure

NCT06735599
View directory record Official record
Conditions
Hypertension (Without Type 2 Diabetes Mellitus), High Blood Pressure, Male, Female, Adult, Cognition, Endothelial Function (Reactive Hyperemia), Oxidative Stress, Diet, Overweight, Body Composition Measurement, Gut Microbiome, Arterial Stiffness, Caucasian Whites, Inflammation, Microvascular Function
Interventions
Wild Blueberry, Placebo
Dietary Supplement
Lead sponsor
Georgia State University
Other
Eligibility
45 Years to 65 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Mar 26, 2026 · Synced Jun 10, 2026, 7:45 AM EDT
Completed Phase 2 Interventional Results available

Gut Decontamination In Pediatric Allogeneic Hematopoietic

NCT02641236
View directory record Official record
Conditions
Hematopoietic Stem Cell Transplantation (HSCT), Acute GVH Disease
Interventions
Vancomycin-polymyxin B
Drug
Lead sponsor
Dana-Farber Cancer Institute
Other
Eligibility
4 Years to 30 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2021
U.S. locations
2
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 14, 2023 · Synced Jun 10, 2026, 7:45 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Personalized Responses to Dietary Composition Trial 3

NCT04735835
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Apr 15, 2025 · Synced Jun 10, 2026, 7:45 AM EDT