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The Effect of low-FODMAPs (fermentable oligosaccharides, disaccharides, monosaccharides, and polyols) diet on clinical symptoms and quality of life in patients with non-ulcer dyspepsia: a randomized controlled trial

The Effect of low-FODMAPs (fermentable oligosaccharides, disaccharides, monosaccharides, and polyols) diet on clinical symptoms and quality of life in patients with non-ulcer dyspepsia: a randomized controlled trial

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
IRCT
Registry ID
IRCT20100524004010N41
Enrollment
50
Registered
2025-03-24
Start date
2025-04-05
Completion date
Unknown
Last updated
2025-07-21

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

non-ulcer dyspepsia. Functional dyspepsia

Interventions

Intervention 1: Control group: The control group will continue their regular weight-maintenance diet without any restrictions on FODMAP intake for 12 weeks. Clinical symptoms and quality of life will

Sponsors

Shahid Beheshti University of Medical Sciences
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Inclusion criteria

Inclusion criteria: Age over 18 years Diagnosis of functional dyspepsia based on Rome IV criteria History of dyspeptic symptoms for at least 6 months Willingness and ability to adhere to the Low FODMAP Diet (LFD) No other gastrointestinal diseases, such as Crohn’s disease, ulcerative colitis, or celiac disease No regular use of nonsteroidal anti-inflammatory drugs (NSAIDs) Not pregnant or breastfeeding

Exclusion criteria

Exclusion criteria: Unwillingness to continue the study Non-adherence to the intervention The occurrence of any serious adverse effects Becoming pregnant Development of any new gastrointestinal disease Regular use of NSAIDs

Design outcomes

Primary

MeasureTime frame
Clinical symptoms. Timepoint: At the beginning of the study, the first month, and the third month. Method of measurement: GSRS Scale for Functional Dyspepsia.;Quality of life. Timepoint: At the beginning of the study, the first month, and the third month. Method of measurement: Short-Form Nepean Dyspepsia Index (SF-NDI).

Secondary

MeasureTime frame
Upper Abdominal Pain. Timepoint: At the beginning of the study, the first month, and the third month. Method of measurement: GSRS Scale for Functional Dyspepsia.;Bloating. Timepoint: At the beginning of the study, the first month, and the third month. Method of measurement: GSRS Scale for Functional Dyspepsia.;Early Satiety. Timepoint: At the beginning of the study, the first month, and the third month. Method of measurement: GSRS Scale for Functional Dyspepsia.;Nausea. Timepoint: At the beginning of the study, the first month, and the third month. Method of measurement: GSRS Scale for Functional Dyspepsia.;Belching. Timepoint: At the beginning of the study, the first month, and the third month. Method of measurement: GSRS Scale for Functional Dyspepsia.;Has your general emotional well-being been disturbedby your stomach problems in the last 2 weeks?. Timepoint: At the beginning of the study, the first month, and the third month. Method of measurement: Short-Form Nepean Dyspepsia Index (SF-NDI).;Have you been irritable, tense or frustrated in thelast 2 weeks because of your stomach problems?. Timepoint: At the beginning of the study, the first month, and the third month. Method of measurement: Short-Form Nepean Dyspepsia Index (SF-NDI).;Has your ability to engage in things you usually do for fun (recreations, going out, hobbies, sports, etc.) been disturbed by your stomach problems in the last 2 weeks?. Timepoint: At the beginning of the study, the first month, and the third month. Method of measurement: Short-Form Nepean Dyspepsia Index (SF-NDI).;Has your enjoyment of things you usually do for fun (recreations, going out, hobbies, sports, etc.) been disturbed by your stomach problems in the last 2 weeks?. Timepoint: At the beginning of the study, the first month, and the third month. Method of measurement: Short-Form Nepean Dyspepsia Index (SF-NDI).;Has your ability to eat or drink (including when, what, and how much) been disturbed by your stomach problems in the

Countries

Iran (Islamic Republic of)

Contacts

Public ContactAzita Hekmatdoost

Shahid Beheshti University of Medical Sciences

a_hekmat2000@yahoo.com+98 21 2235 7483

Outcome results

None listed

Source: IRCT (via WHO ICTRP) · Data processed: Feb 4, 2026