Diet showdown: which eating plan calms IBS best?
NCT ID NCT05192603
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study compares two special diets—low FODMAP and a starch-and-sugar-reduced diet—to see which one works better for reducing belly pain, bloating, and other IBS symptoms. About 200 adults with IBS will follow one of the diets and report how they feel. The goal is to find out which diet helps more and understand how each one affects the body.
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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 200 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Mar 2022
- Expected to finish
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Mar 2029
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 70 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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: * Verified IBS according to Rom IV criteria. Exclusion Criteria: * Serious mental disease * Serious somatic disease * Abuse * Inability to understand the Swedish language * Already on a diet
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Conditions
The condition(s) this trial relates to.
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
The full official record for this study. This one lists no contact details, but it is the first place any would appear.
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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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Deartment of INternal Medicine
Malmö, 20502, Sweden
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Other studies related to the condition(s) this trial covers.
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- Could a new drug calm the gut and stop IBS pain?
- New enzyme blend could be the key to beating bloating
- Could your family history of celiac disease hide a wheat sensitivity?