Randomised controlled trialcited by the Tayebat archiveabstract only checked★ key study A-LEG-10 in-depth review

Low-FODMAP diet in irritable bowel

A diet low in FODMAPs reduces symptoms of irritable bowel syndrome.

Overview

Halmos EP et al.. Gastroenterology 2014 · PMID 24076059 · DOI 10.1053/j.gastro.2013.09.046

Diet low in fermentable sugars halved symptom scores in IBS patients; healthy people had no symptoms on either diet.

Does the study support the specific claim? Partly · Methodological quality: moderate

Study explained simply

What did the researchers want to find out?: Test low-FODMAP diet
How was the study done?: Crossover RCT
How many people, animals or samples were studied?: 30 IBS + 8 controls
What was actually found?: Fewer symptoms
How large was the observed effect?: 22.8 vs 44.9 mm
What do the results mean in everyday life?: Helps people with IBS.
What are the study's limitations?: Small, short
What does it say about Elawady's specific claim?: Supports IBS-specific restriction
Do the results apply to Germany and Europe?: High
What can explicitly not be concluded from this study?: Cannot show harm in healthy people.

Authors: Halmos EP, Power VA, Shepherd SJ, Gibson PR, Muir JG
Journal: Gastroenterology
Year: 2014
Identifier: PMID 24076059 DOI 10.1053/j.gastro.2013.09.046
Verification: verified – PubMed E-utilities efetch, 2026-10-25
Retracted: no
Corrections: none
Extent checked: abstract only
Conflicts of interest and funding: ACTRN12612001185853; COI not stated in abstract

Does a low-FODMAP diet reduce IBS symptoms vs a typical Australian diet?

Study design: Randomised controlled trial – Randomised, controlled, single-blind crossover trial (21 days each diet, washout ≥21 days)
Population: 30 IBS patients, 8 healthy controls
Country: Australia
Period: Not stated
Sample size: 38 (30 IBS patients + 8 healthy controls)
Inclusion and exclusion criteria: IBS patients and matched controls

Exposure / intervention: Low-FODMAP diet (<0.5 g FODMAP per meal), food provided
Comparator: Typical Australian diet
Endpoints: Daily GI symptoms (100-mm VAS), stool measures
Statistical methods: Mean with 95% CI

Results: Overall GI symptom score 22.8 mm (95% CI 16.7-28.8) on low-FODMAP vs 44.9 mm (36.6-53.1) on Australian diet (P<.001); bloating, pain and wind reduced; controls had minimal symptoms on both diets.
Absolute risks: not reported
Authors' conclusion: A low-FODMAP diet effectively reduced functional GI symptoms; supports first-line use.

Clinically relevant difference in IBS.

Supports C-LEG-12 for IBS.

Controls unaffected.

High.

Good trial, legume attribution inferred.

Multidimensional assessment
Multidimensional assessment
Authenticity of the source	verified
Methodological quality	moderate
Risk of bias	some concerns
Precision of results	moderate
Directness	indirect
Reproducibility	replicated
Consistency with the overall evidence	consistent
Regional transferability	high
Adequacy of the interpretation (by the archive)	partly correct but over-interpreted

Long-term effects.

Note: according to the archive, the studies were compiled by the archive operators. Whether Dr. Elawady himself cited this study is not established.

What the archive says about the study: Legumes (GOS source) trigger bloating, pain and gas in IBS; low-FODMAP reduced symptoms.
A. What was actually studied?: Whole low-FODMAP diet in IBS.
B. What did the authors find?: Symptoms reduced in IBS; controls unaffected.
C. What conclusions do the authors themselves draw?: Low-FODMAP is first-line for IBS.
D. What does the archive derive from it?: Used to show legumes trigger symptoms.
E. Is this derivation scientifically justified?: Partly: legumes are one FODMAP source, but legumes were not tested in isolation, and healthy people were unaffected.
Adequacy of the interpretation (by the archive): partly correct but over-interpreted