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ClinicalTrials.gov public records Last synced Oct 19, 2026, 6:24 PM EDT

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Showing 73–96 of 232 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: High Fiber Clear all
Recruiting Not applicable Interventional

A Dietary Study for People With Multiple Myeloma

NCT07226609
View directory record Official record
Conditions
Multiple Myeloma
Interventions
nutrition counseling and coaching, dietary guidelines, research dietitian visit, Questionnaires, Frozen pre-prepared meals
Other · Behavioral
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years and older
Enrollment
220 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
7
States / cities
Basking Ridge, New Jersey • Middletown, New Jersey • Montvale, New Jersey + 4 more
Source: ClinicalTrials.gov public record
Updated May 5, 2026 · Synced Oct 19, 2026, 6:24 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Impact of High Dietary Fiber on Microbiome and Vaccine Responses

NCT05565586
View directory record Official record
Conditions
Influenza
Interventions
High-Fiber Diet (HFD), Prebiotic Food-Enriched Diet (PreFED)
Dietary Supplement
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
31 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2029
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Aug 14, 2026 · Synced Oct 19, 2026, 6:24 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Small Bowel Microbiota Characterization in Healthy Individuals Before and After Consumption of a Western Diet

NCT03266536
View directory record Official record
Conditions
Small Intestine Bacteria
Interventions
Western diet
Behavioral
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 65 Years
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated May 4, 2022 · Synced Oct 19, 2026, 6:24 PM EDT
Recruiting Phase 1Phase 2 Interventional

Manipulation of the Gut Microbiome by a Standardized Preoperative Diet to Prevent Colorectal Cancer Recurrence and Metastasis Following Surgery

NCT06349590
View directory record Official record
Conditions
Colorectal Cancer
Interventions
High-fiber/low-fat meals
Dietary Supplement
Lead sponsor
University of Chicago
Other
Eligibility
18 Years and older
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2029
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Sep 21, 2026 · Synced Oct 19, 2026, 6:24 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

The Diet Gout Trial

NCT03569020
View directory record Official record
Conditions
Gout, Hyperuricemia
Interventions
Subsidy for food purchases and dietitian education
Other
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years and older
Enrollment
43 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
2
States / cities
Woodlawn, Maryland • Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 30, 2021 · Synced Oct 19, 2026, 6:24 PM 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 11, 2025 · Synced Oct 19, 2026, 6:24 PM EDT
Recruiting Not applicable Interventional

Study of Nutrition and Exercise in Adults Hospitalized for Treatment of Acute Lymphoblastic Leukemia (ALL)

NCT06785324
View directory record Official record
Conditions
Philadelphia Chromosome Negative, B Cell Acute Lymphoblastic Leukemia (B-ALL), B-ALL
Interventions
Nutrition Intervention, Exercise intervention
Behavioral
Lead sponsor
University of Chicago
Other
Eligibility
18 Years to 50 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jun 19, 2025 · Synced Oct 19, 2026, 6:24 PM EDT
Completed Not applicable Interventional Results available

Anti-inflammatory Effects of the Fiber

NCT02868788
View directory record Official record
Conditions
Type 2 Diabetes
Interventions
dietary fiber, HFHC meal
Dietary Supplement · Other
Lead sponsor
University at Buffalo
Other
Eligibility
18 Years to 80 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Oct 17, 2024 · Synced Oct 19, 2026, 6:24 PM EDT
Completed Phase 4 Interventional

A Very High Fiber Diet Versus a Low-carbohydrate Diet for Weight Loss

NCT01051674
View directory record Official record
Conditions
Obesity, Type 2 Diabetes
Interventions
High fiber vs. low-carbohydrate diets
Other
Lead sponsor
Loma Linda University
Other
Eligibility
18 Years and older
Enrollment
173 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Loma Linda, California
Source: ClinicalTrials.gov public record
Updated Jul 1, 2014 · Synced Oct 19, 2026, 6:24 PM EDT
Withdrawn Phase 2 Interventional

High Protein and Exercise Therapy Plus Nocturnal Enteral Feeding in Juvenile-onset Pompe Disease

NCT01656590
View directory record Official record
Conditions
Glycogen Storage Disease Type II
Interventions
High Protein and Exercise Therapy along-with Nocturnal Enteral Feeding
Other
Lead sponsor
Columbia University
Other
Eligibility
8 Years to 17 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 13, 2015 · Synced Oct 19, 2026, 6:24 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Food Effects on the Gut Microbiota

NCT03078283
View directory record Official record
Conditions
Gut Microbial Responses to Dietary Fiber
Interventions
high-fiber food type
Other
Lead sponsor
Washington University School of Medicine
Other
Eligibility
31 Years to 45 Years · Female only
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jan 22, 2020 · Synced Oct 19, 2026, 6:24 PM EDT
Completed Phase 1 Interventional

Bisnorcymserine in Healthy Adult Volunteers

NCT01747213
View directory record Official record
Conditions
Healthy Volunteers
Interventions
BNC, Placebo
Drug · Other
Lead sponsor
National Institute on Aging (NIA)
NIH
Eligibility
55 Years and older
Enrollment
75 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2019
U.S. locations
2
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 16, 2026 · Synced Oct 19, 2026, 6:24 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Whole Grain and Fiber Addition Study

NCT03623308
View directory record Official record
Conditions
Healthy
Interventions
Fiber cereal
Other
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 70 Years
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Nov 1, 2019 · Synced Oct 19, 2026, 6:24 PM EDT
Recruiting Not applicable Interventional

Fiber Smoothie Supplement

NCT06896240
View directory record Official record
Conditions
Total Knee Arthroplasty Revision, Inflammatory Markers, Gut Microbiota
Interventions
Assigned Interventions
Dietary Supplement
Lead sponsor
Hospital for Special Surgery, New York
Other
Eligibility
40 Years to 80 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Sep 28, 2026 · Synced Oct 19, 2026, 6:24 PM EDT
Recruiting Not applicable Interventional

Dietary Interventions in Cancer Patients Treated With Immune Checkpoint Inhibitors

NCT06475807
View directory record Official record
Conditions
Cancer
Interventions
High-fermented food, High fiber supplementation
Dietary Supplement
Lead sponsor
University of Pittsburgh
Other
Eligibility
18 Years and older
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2030
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 11, 2026 · Synced Oct 19, 2026, 6:24 PM EDT
Completed No phase listed Observational

Women's Healthy Eating and Living Study

NCT00003787
View directory record Official record
Conditions
Breast Cancer
Interventions
educational/counseling intervention, therapeutic dietary intervention
Behavioral
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years to 70 Years · Female only
Enrollment
3,088 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1995 – 2018
U.S. locations
7
States / cities
Tucson, Arizona • La Jolla, California • Oakland, California + 4 more
Source: ClinicalTrials.gov public record
Updated Jun 10, 2019 · Synced Oct 19, 2026, 6:24 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

A Study of Strawberries and Disease Risk

NCT01199848
View directory record Official record
Conditions
Nutritional and Metabolic Diseases, Inflammation, Physiological Responses
Interventions
Placebo, 10G, 20G, 40G, Placebonofiber
Dietary Supplement
Lead sponsor
Clinical Nutrition Research Center, Illinois Institute of Technology
Industry
Eligibility
18 Years and older
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2015
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Feb 12, 2021 · Synced Oct 19, 2026, 6:24 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Dietary Impact on Intestinal Sulfate Metabolism

NCT05333900
View directory record Official record
Conditions
Healthy Nutrition
Interventions
Plant-Based Diet then animal-based diet, Animal-based diet then plant-based diet
Behavioral
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 80 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2021
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Dec 5, 2023 · Synced Oct 19, 2026, 6:24 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Fiber Effectively Educates & Directs the Microbiome Study

NCT06395324
View directory record Official record
Conditions
Microbial Colonization
Interventions
High arabinose diet
Other
Lead sponsor
University of California, Davis
Other
Eligibility
18 Years to 50 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated Aug 27, 2025 · Synced Oct 19, 2026, 6:24 PM EDT
Not listed Phase 1 Interventional Accepts healthy volunteers

High Fiber in Parkinson's Disease

NCT04976959
View directory record Official record
Conditions
Parkinson Disease
Interventions
High Fiber supplement
Drug
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
50 Years to 75 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2025
U.S. locations
1
States / cities
New Brunswick, New Jersey
Source: ClinicalTrials.gov public record
Updated Feb 26, 2024 · Synced Oct 19, 2026, 6:24 PM EDT
Completed Not applicable Interventional Results available

Comparing Synthetic Hybrid-Scale Fiber Matrix With Standard of Care in Treating Diabetic Foot Ulcers

NCT04918784
View directory record Official record
Conditions
Diabetic Foot Ulcer
Interventions
Restrata®, Wound Dressing
Device
Lead sponsor
Acera Surgical, Inc.
Industry
Eligibility
18 Years and older
Enrollment
46 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Hoffman Estates, Illinois
Source: ClinicalTrials.gov public record
Updated Sep 28, 2023 · Synced Oct 19, 2026, 6:24 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

High Quality Protein for Assisting With Weight Loss

NCT03085511
View directory record Official record
Conditions
Obesity
Interventions
Egg breakfast (EB), Weight Loss Counseling, Weight Loss Diet, Cereal Breakfast (CB)
Behavioral
Lead sponsor
Texas Tech University
Other
Eligibility
18 Years to 44 Years · Female only
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
Lubbock, Texas
Source: ClinicalTrials.gov public record
Updated May 30, 2019 · Synced Oct 19, 2026, 6:24 PM EDT
Completed Not applicable Interventional

Effects of Resistant Starch Diet on the Gut Microbiome in Chronic Kidney Disease

NCT03356990
View directory record Official record
Conditions
Chronic Kidney Diseases
Interventions
Resistant Starch
Dietary Supplement
Lead sponsor
University of Arkansas
Other
Eligibility
5 Years to 85 Years
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2024
U.S. locations
1
States / cities
Little Rock, Arkansas
Source: ClinicalTrials.gov public record
Updated Mar 7, 2025 · Synced Oct 19, 2026, 6:24 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Study to Determine the Digestive and Physiological Effects of an Extract From Bran in Healthy Men and Women

NCT01073969
View directory record Official record
Conditions
Healthy
Interventions
wheat bran extract, control wheat bran extract
Other
Lead sponsor
Kellogg Company
Industry
Eligibility
18 Years to 75 Years
Enrollment
65 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009
U.S. locations
1
States / cities
Glen Ellyn, Illinois
Source: ClinicalTrials.gov public record
Updated Feb 23, 2010 · Synced Oct 19, 2026, 6:24 PM EDT