Which diet soothes your gut best? new study tests FODMAP approaches
NCT ID NCT07000227
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at how different FODMAP diets affect gut bacteria, gut barrier function, and symptoms in people with functional gastrointestinal disorders like IBS. About 60 adults will follow either a low FODMAP, gentle FODMAP, or standard dietary advice for two weeks. Researchers will collect stool and blood samples to see which diet works best for Malaysian patients.
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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 60 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Jul 2025
- 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 years and older
- 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.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Aged 18 and above * Able to provide informed consent * Those with pre-existing irritable bowel syndrome (IBS) or functional dyspepsia (FD) or both screened by gastroenterologists * Meet the ROME III- Asian criteria for FGID * Able to communicate in Malay or English language Exclusion Criteria: * Pregnant or lactating women * History declared by the participant of pre-existing gastrointestinal disorder, including but not limited to Inflammatory Bowel Disease, Coeliac Disease, Pancreatitis, Gallstone disease (biliary colic, cholecystitis), Diverticulitis * Cancer of any kind * Patients with reported history of previous resection of any part of the GI tract other than appendix or gall bladder, intestinal stoma * Habitual use of opiate analgesics likely to alter bowel function e.g. morphine * Use of antibiotics in the preceding two weeks and/or in the past one month * Consumption of probiotics, prebiotics or fibre supplements in the past one month * Enteral feeding or texture modified diet patients * Those with cognitive impairment or severe mental disorder (Alzheimer's, schizophrenia, bipolar disorder. etc) * Shift workers (e.g. Nurse, doctors)
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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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Hospital Canselor Tuanku Muhriz Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, Bandar Tun Razak
RECRUITINGKuala Lumpur, Kuala Lumpur, 56000, Malaysia
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