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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Intestinal Microbiome Clear all
Completed Not applicable Interventional Accepts healthy volunteers

The Effects of a Novel Nutritional Product on Nutrient Gaps and Gut Health in Active Adults

NCT06521424
View directory record Official record
Conditions
Gastrointestinal Microbiome, Nutrition, Healthy, Exercise
Interventions
AG1 - Nutritional Supplement, Placebo
Dietary Supplement
Lead sponsor
Athletic Greens International
Industry
Eligibility
18 Years to 40 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
Hempstead, New York
Source: ClinicalTrials.gov public record
Updated May 3, 2025 · Synced Jun 11, 2026, 1:40 AM EDT
Recruiting Not applicable Interventional

Evaluating the Effects of an Exercise Intervention on the Gut Microbiota in Stage II-III Colorectal Cancer Survivors

NCT05930496
View directory record Official record
Conditions
Stage II Colorectal Cancer AJCC v8, Stage III Colorectal Cancer AJCC v8, Colorectal Carcinoma
Interventions
Biospecimen Collection, Exercise Intervention, Health Education, Interview, Questionnaire Administration
Procedure · Other · Behavioral
Lead sponsor
Fred Hutchinson Cancer Center
Other
Eligibility
18 Years to 70 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Apr 19, 2026 · Synced Jun 11, 2026, 1:40 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Flourish: Exploring the Early Infant Gut Microbiome

NCT07333482
View directory record Official record
Conditions
Microbiota, Gut Microbiome, Eczema, Microbiome
Interventions
Tailored Recommendations, Consult Call, Educational Email Series
Dietary Supplement · Behavioral
Lead sponsor
Seeding Inc
Industry
Eligibility
0 Months to 3 Months
Enrollment
250 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Feb 23, 2026 · Synced Jun 11, 2026, 1:40 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 11, 2026, 1:40 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Gut Microbiota Changes in Obese Individuals Undergoing Dedicated Lifestyle Modification Programs

NCT02855242
View directory record Official record
Conditions
Obesity
Interventions
Lifestyle Counseling, Controls Group
Behavioral · Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2021
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Dec 15, 2021 · Synced Jun 11, 2026, 1:40 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Impact of Weizmannia (Bacillus) Coagulans JBI-YZ6.3 on Gut Health and Fecal Microbiome Changes

NCT07388264
View directory record Official record
Conditions
Gastrointestinal Symptoms, Constipation, Gut Health, Gastrointestinal Function
Interventions
Weizmannia (Bacillus) coagulans JBI-YZ6.3, Placebo
Dietary Supplement
Lead sponsor
Lindenwood University
Other
Eligibility
18 Years to 50 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Saint Charles, Missouri
Source: ClinicalTrials.gov public record
Updated Feb 4, 2026 · Synced Jun 11, 2026, 1:40 AM EDT
Recruiting Not applicable Interventional

A Randomized, Triple-blind, Placebo-controlled Study to Evaluate the Effects of a Supplement on Nutrient Gaps and Gut Health Among Individuals Utilizing GLP-1 RAs

NCT07437911
View directory record Official record
Conditions
Nutrition Intake, Nutrition Status, Gastrointestinal Microbiome, GLP-1
Interventions
AG1 - Nutritional Supplement, Placebo
Dietary Supplement
Lead sponsor
Athletic Greens International
Industry
Eligibility
18 Years to 59 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
1
States / cities
Santa Monica, California
Source: ClinicalTrials.gov public record
Updated Feb 26, 2026 · Synced Jun 11, 2026, 1:40 AM EDT
Completed Not applicable Interventional

Oropharyngeal Administration of Mother's Colostrum for Premature Infants (NS-72393-360)

NCT02116699
View directory record Official record
Conditions
Infection, Enterocolitis, Necrotizing, Ventilator-associated Pneumonia
Interventions
oropharyngeal mother's milk, oropharyngeal sterile water
Other
Lead sponsor
Endeavor Health
Other
Eligibility
1 Day to 4 Days
Enrollment
260 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2022
U.S. locations
5
States / cities
Miami, Florida • Evanston, Illinois • Park Ridge, Illinois + 2 more
Source: ClinicalTrials.gov public record
Updated Feb 28, 2023 · Synced Jun 11, 2026, 1:40 AM EDT
Active, not recruiting Not applicable Interventional

The Beans to Enrich the Gut Microbiome vs. Obesity's Negative Effects (BE GONE) Trial

NCT02843425
View directory record Official record
Conditions
Colorectal Cancer Prevention
Interventions
Regular Diet, Navy Beans (Canned)
Other
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
30 Years and older
Enrollment
71 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2027
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Apr 14, 2026 · Synced Jun 11, 2026, 1:40 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Hummus for Health: Dietary Quality and Health Outcomes in Toddlers

NCT02696278
View directory record Official record
Conditions
Obesity
Interventions
Lesson about vegetables, Vegetables, Hummus
Other
Lead sponsor
Baylor College of Medicine
Other
Eligibility
12 Months to 24 Months
Enrollment
139 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jul 16, 2017 · Synced Jun 11, 2026, 1:40 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Study to Evaluate the Efficacy of a Postbiotic Supplement on Menopausal Symptoms in Premenopausal Women

NCT07570043
View directory record Official record
Conditions
Perimenopause, Menopausal Symptoms, Menopause-Related Quality of Life, Microbiome
Interventions
Supplement, Placebo
Dietary Supplement · Other
Lead sponsor
Able Biolabs, LLC
Other
Eligibility
35 Years to 55 Years · Female only
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated May 31, 2026 · Synced Jun 11, 2026, 1:40 AM EDT
Terminated Not applicable Interventional

VITORA: Clinical Study to Evaluate the Effect of KB109 on the Gut Microbiome in Subjects Whose Gastrointestinal Tracts Are Colonized With Multiple Drug-resistant Organisms

NCT03944369
View directory record Official record
Conditions
Vancomycin-Resistant Enterococcus, Extended-Spectrum Beta Lactamase-Producing Enterobacteriaceae, or Carbapenem-Resistant Enterobacteriaceae Colonized Subjects
Interventions
KB109, No intervention
Other
Lead sponsor
Kaleido Biosciences
Industry
Eligibility
18 Years and older
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
8
States / cities
Torrance, California • Atlanta, Georgia • Augusta, Georgia + 5 more
Source: ClinicalTrials.gov public record
Updated Jan 21, 2021 · Synced Jun 11, 2026, 1:40 AM EDT
Active, not recruiting Not applicable Interventional

Microbiome and Rectal Cancer

NCT04223102
View directory record Official record
Conditions
Rectal Cancer, Locally Advanced Malignant Neoplasm
Interventions
Tissue collection
Procedure
Lead sponsor
University of South Florida
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2027
U.S. locations
3
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Aug 1, 2023 · Synced Jun 11, 2026, 1:40 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Infant Restore: Efficacy of Microbiome Analysis and Education

NCT06424691
View directory record Official record
Conditions
Microbiota, Eczema, Microbiome, Gut Microbiome
Interventions
Tailored Recommendations, Consult Call, Email Series
Dietary Supplement · Behavioral
Lead sponsor
Seeding Inc
Industry
Eligibility
0 Months to 3 Months
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
Fredericksburg, Texas
Source: ClinicalTrials.gov public record
Updated May 21, 2024 · Synced Jun 11, 2026, 1:40 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Neonatal Microbiome Validity Study

NCT02655250
View directory record Official record
Conditions
Gut Microbiome
Interventions
Microbiome
Other
Lead sponsor
State University of New York at Buffalo
Other
Eligibility
Not listed
Enrollment
5 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2017
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Oct 26, 2020 · Synced Jun 11, 2026, 1:40 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Early Iron Exposure on the Gut Microbiota in Young Infants

NCT03828708
View directory record Official record
Conditions
Infant Development
Interventions
Iron in infant formula
Other
Lead sponsor
University of Colorado, Denver
Other
Eligibility
1 Day to 4 Months
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Feb 1, 2023 · Synced Jun 11, 2026, 1:40 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 11, 2026, 1:40 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Blueberry Intake and Infant Gut Health

NCT05006989
View directory record Official record
Conditions
Infant Development
Interventions
Blueberry Powder, Placebo Powder
Other
Lead sponsor
University of Colorado, Denver
Other
Eligibility
4 Months to 5 Months
Enrollment
75 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2025
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Apr 29, 2025 · Synced Jun 11, 2026, 1:40 AM EDT
Not yet recruiting Phase 1 Interventional Accepts healthy volunteers

Blackcurrants Modify Gut Microbiota and Reduce Osteoporosis Risk in Postmenopausal Females

NCT07365514
View directory record Official record
Conditions
Postmenopausal Osteoporosis, Gut Microbiome, Menopause
Interventions
Blackcurrant (BC) extract, Placebo
Drug
Lead sponsor
University of Connecticut
Other
Eligibility
45 Years to 70 Years · Female only
Enrollment
159 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2029
U.S. locations
1
States / cities
Storrs, Connecticut
Source: ClinicalTrials.gov public record
Updated Jan 26, 2026 · Synced Jun 11, 2026, 1:40 AM EDT
Completed No phase listed Observational

Gut and Intratumoral Microbiome Effect on the Neoadjuvant Chemotherapy-induced Immunosurveillance in Triple Negative Breast Cancer

NCT03586297
View directory record Official record
Conditions
Triple Negative Breast Cancer
Interventions
Not listed
Lead sponsor
Hackensack Meridian Health
Other
Eligibility
18 Years and older · Female only
Enrollment
49 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2025
U.S. locations
3
States / cities
New Haven, Connecticut • Washington D.C., District of Columbia • Hackensack, New Jersey
Source: ClinicalTrials.gov public record
Updated Mar 26, 2026 · Synced Jun 11, 2026, 1:40 AM EDT
Completed Not applicable Interventional

Microbiome, Exercise Tracking Study: Among Individuals at High Risk for Colorectal Cancer

NCT02780284
View directory record Official record
Conditions
Colorectal Cancer
Interventions
Physical activity intervention
Behavioral
Lead sponsor
Columbia University
Other
Eligibility
21 Years to 69 Years
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2020
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Oct 12, 2022 · Synced Jun 11, 2026, 1:40 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Fiber Food Introduction in Pediatric Short Bowel Syndrome

NCT05432648
View directory record Official record
Conditions
Short Gut Syndrome
Interventions
Green bean puree
Dietary Supplement
Lead sponsor
Children's Hospital of Philadelphia
Other
Eligibility
4 Months to 18 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2026
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 16, 2025 · Synced Jun 11, 2026, 1:40 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Assessing the Dose Response of a Lead Fiber Snack Prototype

NCT04729816
View directory record Official record
Conditions
Microbiota, Gastrointestinal Microbiome
Interventions
Controlled, high fat/low fiber diet background diet, sequentially supplemented with an escalating dose of a fiber-blend snack food.
Other
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 60 Years
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Dec 26, 2024 · Synced Jun 11, 2026, 1:40 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Time-Restricted Eating and Mindfulness-Based Stress Reduction to Reduce the Risk of Early-Onset Colorectal Cancer

NCT06022887
View directory record Official record
Conditions
Obesity, Colorectal Cancer, Microbial Colonization, Time Restricted Feeding, Stress, Psychological
Interventions
TRE, MBSR
Behavioral
Lead sponsor
Lisa Tussing-Humphreys
Other
Eligibility
18 Years to 39 Years
Enrollment
43 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Aug 20, 2024 · Synced Jun 11, 2026, 1:40 AM EDT