Personalized dietary fiber recommendations for patients with inflammatory bowel disease

The Fibre Study: RCT of Personalized Fibre Diet in IBD

Not applicable Interventional University of Manitoba · NCT05615779

This study tests if personalized fiber diets can help children and young adults with inflammatory bowel disease feel better and improve their health.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment600 (estimated)
Ages6 Years to 39 Years
SexAll
SponsorUniversity of Manitoba Academic / other
Drugs / interventionsPrednisone
Locations2 sites (Edmonton, Alberta and 1 other locations)
Trial IDNCT05615779 on ClinicalTrials.gov

What this trial studies

This study examines how well patients with inflammatory bowel diseases, specifically ulcerative colitis, tolerate personalized dietary fiber recommendations. Participants will be assigned to different diet groups, including high-pectin and high-B-fructan diets, based on their individual responses. The dietary plans are developed by an IBD dietician and aim to improve patient outcomes through tailored nutrition. The study will involve children and young adults who are in remission or have mild to moderate disease.

Who should consider this trial

Good fit: Ideal candidates include children aged 6-17 and young adults aged 18-39 with known or suspected ulcerative colitis or inflammatory bowel disease.

Not a fit: Patients with a history of abdominal surgery or those currently using antibiotics or probiotics at pharmacological doses may not benefit from this study.

Why it matters

Potential benefit: If successful, this approach could lead to improved dietary management and quality of life for patients with inflammatory bowel diseases.

How similar studies have performed: While personalized dietary interventions in IBD are gaining interest, this specific approach is relatively novel and has not been extensively tested in previous studies.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Children (age 6-17) or young adults (age 18-39).
* Known or suspected UC or IBDU \[there will be 2 control group: non-IBD (undergoing colonoscopy but found not to have IBD; and healthy (no GI symptoms, so not required to have colonoscopy; could be family members)\]
* For UC: Remission-mild-moderate disease: Mayo score \<10
* Clinical indication for sedated colonoscopy
* Disease location: E2-E4
* Stable treatment (not on steroids; biologics or immunomodulator not changed in last month)
* High likelihood that patients will be able to collect all samples and provide all data

Exclusion Criteria:

* Use of antibiotics for a week or more over the last 3 months
* Use of probiotics or prebiotics at pharmacological doses (adding fibre sources to food or probiotics in yogurt, for example, are allowed)
* History of abdominal surgery, including appendectomy
* Documented enteric infection during the 3 months prior to endoscopy
* Presence of non-IBD bowel conditions (e.g., celiac), anatomical or mucosal abnormalities, motility disorder
* Presence of a systemic disease requiring treatment (cancer, ischemic heart disease, kidney failure, etc)
* Proctitis (E1)
* Systemic steroids (above 10 mg/day of Prednisone)
* Topical therapy within 1 week of endoscopy
* Recent change in IBD treatment (started biologics or IM over the last month)
* Pregnancy or planning to become pregnant during the study
* Inability to understand or sign the consent

Where this trial is running

Edmonton, Alberta and 1 other locations

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 Inflammatory Bowel DiseasesUlcerative Colitis
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.