Gut bacteria clues: new stool test may spot IBS triggers
NCT ID NCT05972317
First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study looks at the gut bacteria of 100 people with irritable bowel syndrome (IBS) to see if a stool test can help diagnose the condition. Half will follow a low-FODMAP diet, a common but restrictive eating plan. Researchers will compare the bacteria and symptoms between the two groups to find patterns that could lead to a simple diagnostic tool.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- low-FODMAP diet
- What this could lead to
- If successful, this could lead to a simple stool test to help diagnose IBS and personalize dietary treatments.
- What could go wrong
- This is an early observational study, not a treatment trial. The diagnostic tool may not prove accurate or useful in practice.
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 100 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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May 2026
- Expected to finish
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Nov 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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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: * Male and Female * Age - 18-70 Exclusion Criteria: * Consumption of antibiotics 2 months prior to the first day of the experiment. * Consumption of probiotic supplements 1 month prior to the first day of the experiment. * Type 1 or type 2 diabetes diagnosis. * Pregnancy, fertility treatments, breastfeeding 3 months prior to the first day of the study. * Chronic disease - to the discretion of the study doctor. * Cancer and recent anticancer treatment. * Psychiatric disorders - to the discretion of the study doctor. * IBD (inflammatory bowel diseases). * Alcohol or substance abuse. * BMI \> 35.
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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
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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Weizmann institute of science
RECRUITINGRehovot, Israel
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