Evidence map›Paper›PMID 40273380›Full record

Trial reportNeurogastroenterology and motility2025

Efficacy of Mediterranean Diet vs. Low-FODMAP Diet in Patients With Nonconstipated Irritable Bowel Syndrome: A Pilot Randomized Controlled Trial.

Prashant Singh, Gregory Dean, Sofia Iram, Westley Peng, Samuel W Chey, Samara Rifkin, Christine Lothen-Kline, Jane Muir, Allen A Lee, Shanti Eswaran and 1 more

Registry-linked trialAbstract readRandomized Controlled TrialComparative Study
In one paragraph

Trial report in Neurogastroenterology and motility, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05807919 (Evaluate and Compare the Clinical Efficacy of the Mediterranean Diet to the Low-FODMAP Diet in Treating Irritable Bowel Syndrome), which is not on this map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT05807919 nacompletednot on this map

Evaluate and Compare the Clinical Efficacy of the Mediterranean Diet to the Low-FODMAP Diet in Treating Irritable Bowel Syndrome

TypeinterventionalSponsorUniversity of MichiganRan2023 to 2023Enrolled26ConditionsIrritable Bowel SyndromeArmsDiet low in all FODMAP groups, Diet - Mediterranean
3 · Its place in the literature

Who cites it

12 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Irritable bowel syndrome.Nature reviews. Disease primers · 2026
    Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

11 authors.

Prashant SinghDivsion of Gastroenterology and Hepatology, Department of Internal Medicine, Michigan Medicine, Ann Arbor, USA.
Gregory DeanDivsion of Gastroenterology and Hepatology, Department of Internal Medicine, Michigan Medicine, Ann Arbor, USA.
Sofia IramDivsion of Gastroenterology and Hepatology, Department of Internal Medicine, Michigan Medicine, Ann Arbor, USA.
Westley PengDivsion of Gastroenterology and Hepatology, Department of Internal Medicine, Michigan Medicine, Ann Arbor, USA.
Samuel W CheyDivsion of Gastroenterology and Hepatology, Department of Internal Medicine, Michigan Medicine, Ann Arbor, USA.
Samara RifkinDivsion of Gastroenterology and Hepatology, Department of Internal Medicine, Michigan Medicine, Ann Arbor, USA.
Christine Lothen-KlineModify Health, Alpharetta, Georgia, USA.
Jane MuirDepartment of Gastroenterology, Central Clinical School, Monash University and Alfred Health, Melbourne, Australia.
Allen A LeeDivsion of Gastroenterology and Hepatology, Department of Internal Medicine, Michigan Medicine, Ann Arbor, USA.
Shanti EswaranDivsion of Gastroenterology and Hepatology, Department of Internal Medicine, Michigan Medicine, Ann Arbor, USA.ORCID https://orcid.org/0000-0002-4660-3670
William D CheyDivsion of Gastroenterology and Hepatology, Department of Internal Medicine, Michigan Medicine, Ann Arbor, USA.

Funding

NIH HHS
6 · The paper itself

Abstract

introductionMediterranean diet (MD) has been proposed as a dietary therapy for irritable bowel syndrome (IBS) but its efficacy remains unclear. We compared the efficacy of MD to a diet low in fermentable oligo-, di-, monosaccharides, and polyols (LFD).

methodsIn this pilot-feasibility, randomized controlled trial (RCT), adult patients with diarrhea-predominant IBS (IBS-D) or mixed bowel pattern (IBS-M) were randomized to MD versus LFD for 4 weeks. Meals were provided for both groups (ModifyHealth, GA). Daily variables included abdominal pain intensity (API) and bloating, while IBS symptom severity score (IBS-SSS) and IBS adequate relief (IBS-AR) were scored weekly. The primary endpoint was the proportion of patients with ≥ 30% decrease in API for ≥ 2/4 weeks.

resultsOf 26 randomized patients, 20 finished the study (10 per group). Seventy-three percent of the MD group met the primary endpoint compared to 81.8% of the LFD group (p = 1.0). Although not statistically significant, a numerically higher proportion of the LFD group reported adequate relief and met the responder endpoint for IBS-SSS (50-point reduction) compared to the MD group (54.6% vs. 27.3% for IBS-AR and 81.8% vs. 45.5% for IBS-SSS, p = 0.39 and 0.18, respectively). The LFD group also had a significantly greater reduction in IBS-SSS score over the 4-week treatment period compared to the MD group (-105.5 vs. -60, p = 0.02).

conclusionMD provides symptom relief in IBS-D and IBS-M; however, the magnitude of relief was higher with the LFD. Larger diet comparison studies in real-world settings are needed before MD can be routinely recommended to IBS patients.

trial registrationClinicaltrials.gov: NCT05807919.

Indexed as

Diet, Carbohydrate-RestrictedDiet, MediterraneanIrritable Bowel SyndromeAdultFemaleFODMAP DietHumansMaleMiddle AgedPilot ProjectsTreatment Outcomebowel habitsdietary therapyelimination dietnutrition

Identifiers

PMID40273380
PMCPMC12435798

What OpenQuestion holds

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Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.