Could your gut bugs decide which fibre is best for you?
NCT ID NCT07587424
First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study looks at how different types of dietary fibre (cellulose, oat fibre, and rye fibre) affect gastrointestinal symptoms like bloating and gas in healthy adults. Researchers will examine how each person's unique gut microbiome influences their reaction to these fibres. The goal is to understand why some people experience discomfort with certain fibres, paving the way for personalised nutrition advice.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- dietary fibre supplements (cellulose, oat fibre, rye fibre)
- What this could lead to
- If successful, this could help personalise dietary fibre recommendations to minimise gut discomfort.
- What could go wrong
- This is a small, early-stage study (28 participants) focused on short-term effects, so results may not apply broadly or lead to immediate dietary advice.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 28 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Aug 2026
An estimate. Start dates often move.
- Expected to finish
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Sep 2026
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 to 65 years
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * healthy male and female * aged 18-65 years * experience gastrointestinal discomfort during or after eating * willing to commit to the 6-week study period and follow the study schedule. Exclusion Criteria: * Body mass index ≤ 18.5 or ≥ 35 kg/m². * Inflammatory bowel diseases, irritable bowel syndrome (IBS), celiac disease, endocrine or lipid metabolism disorders, liver or kidney diseases, cancer within the past 5 years, eating disorders. * Medication for gastrointestinal symptoms, bowel function, diabetes, or hypercholesterolemia. * Regular or recent use of antibiotics (within the last 3 months). * Food allergies to the ingredients of the study products. * Heavy, long-duration exercise several times a week. * Smoking, use of snus or nicotine pouches. * Planned or ongoing pregnancy or breastfeeding. * In addition, the site-specific principal investigator may exclude a person due to any illness, medication, or factor they deem relevant for the participant's health and safety or for the conduct of the study.
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As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Department of Food and Nutrition, University of Helsinki
Helsinki, Uusimaa, Finland
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