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Could your gut bugs decide which fibre is best for you?

NCT ID NCT07587424

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting This study
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

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

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

About 28 people

The number the study aims to enrol. It can still change while the study runs.

Expected to start

Aug 2026

An estimate. Start dates often move.

Expected to finish

Sep 2026

An estimate. End dates often move.

Lead sponsor

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

18 to 65 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show 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.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. 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

  • Department of Food and Nutrition, University of Helsinki

    Helsinki, Uusimaa, Finland

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