Understanding how different grains affect gut health and metabolism

Personalized Gastrointestinal Motility Responses to Dietary Fiber and Gut Microbial Metabolites

Not applicable Interventional University of Illinois at Urbana-Champaign · NCT06386471

This study is testing how different types of grains affect gut health and metabolism in people by tracking their digestive responses and health-related substances after eating.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment50 (estimated)
Ages21 Years to 63 Years
SexAll
SponsorUniversity of Illinois at Urbana-Champaign Academic / other
Locations1 site (Urbana, Illinois)
Trial IDNCT06386471 on ClinicalTrials.gov

What this trial studies

This clinical trial investigates the effects of whole and refined grains on gastrointestinal motility and cardiometabolic health. Participants will consume a Smartpill device to monitor their gut responses after eating these grains, while also tracking the production of metabolites related to health. The study aims to link dietary fiber intake with changes in gut microbiome and post-meal metabolite levels over an eight-hour period. By analyzing these interactions, the trial seeks to provide insights into personalized dietary recommendations.

Who should consider this trial

Good fit: Ideal candidates for this study are healthy men and women without any significant gastrointestinal or metabolic disorders.

Not a fit: Patients with conditions such as diabetes, IBS, or those on specific medications that affect metabolism may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to tailored dietary guidelines that improve gut health and metabolic outcomes for individuals.

How similar studies have performed: Other studies have shown promising results in understanding the relationship between diet, gut health, and metabolic responses, suggesting this approach has potential.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Healthy men and women

Exclusion Criteria:

Physician-Diagnosed:

* Diabetes Mellitus
* Nutrient-malabsorption disorders
* Intestinal Bowel Syndrome (IBS)
* Intestinal Bowel Disease (IBD)
* Bleeding-related disorders
* Grain allergy
* Psychological Disorders
* Stenosis
* Dysphasia

History of:

* Bariatric Surgery
* Gallbladder removal
* Eating disorders
* Antibiotic administration (within the past three months)
* Hormone therapy

Currently:

* Using statins
* Pregnant, lactating, or postmenopausal
* Taking oral hypoglycemic agents or insulin
* Ingesting prescription fiber
* Using cholesterol and bile acid absorption inhibitors
* Ingesting nutrition supplements, not including a daily multivitamin (i.e. herbs, tinctures, and extracts) •Using recreational drugs or alcohol (within the past week)
* Taking anti-histamines
* Taking proton pump inhibitors
* Taking antacids

Where this trial is running

Urbana, Illinois

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Nutritional and Metabolic DiseasesGastrointestinal DysfunctionCardiovascular DiseasesDysbiosisdietary fibergastrointestinal motilitycardiometabolicmicrobiome
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.