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Open Access 01-12-2022 | Irritable Bowel Syndrome | Review

Diet and irritable bowel syndrome: an update from a UK consensus meeting

Authors: A. Rej, A. Avery, I. Aziz, C. J. Black, R. K. Bowyer, R. L. Buckle, L. Seamark, C. C. Shaw, J. Thompson, N. Trott, M. Williams, D. S. Sanders

Published in: BMC Medicine | Issue 1/2022

Abstract

There has been a renewed interest in the role of dietary therapies to manage irritable bowel syndrome (IBS), with diet high on the agenda for patients. Currently, interest has focussed on the use of traditional dietary advice (TDA), a gluten-free diet (GFD) and the low FODMAP diet (LFD). A consensus meeting was held to assess the role of these dietary therapies in IBS, in Sheffield, United Kingdom.

Evidence for TDA is from case control studies and clinical experience. Randomised controlled trials (RCT) have demonstrated the benefit of soluble fibre in IBS. No studies have assessed TDA in comparison to a habitual or sham diet. There have been a number of RCTs demonstrating the efficacy of a GFD at short-term follow-up, with a lack of long-term outcomes. Whilst gluten may lead to symptom generation in IBS, other components of wheat may also play an important role, with recent interest in the role of fructans, wheat germ agglutinins, as well as alpha amylase trypsin inhibitors. There is good evidence for the use of a LFD at short-term follow-up, with emerging evidence demonstrating its efficacy at long-term follow-up. There is overlap between the LFD and GFD with IBS patients self-initiating gluten or wheat reduction as part of their LFD. Currently, there is a lack of evidence to suggest superiority of one diet over another, although TDA is more acceptable to patients.

In view of this evidence, our consensus group recommends that dietary therapies for IBS should be offered by dietitians who first assess dietary triggers and then tailor the intervention according to patient choice. Given the lack of dietetic services, novel approaches such as employing group clinics and online webinars may maximise capacity and accessibility for patients. Further research is also required to assess the comparative efficacy of dietary therapies to other management strategies available to manage IBS.

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Title: Diet and irritable bowel syndrome: an update from a UK consensus meeting
Authors: A. Rej
A. Avery
I. Aziz
C. J. Black
R. K. Bowyer
R. L. Buckle
L. Seamark
C. C. Shaw
J. Thompson
N. Trott
M. Williams
D. S. Sanders
Publication date: 01-12-2022
Publisher: BioMed Central
Keyword: Irritable Bowel Syndrome
Published in: BMC Medicine / Issue 1/2022
Electronic ISSN: 1741-7015
DOI: https://doi.org/10.1186/s12916-022-02496-w

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Diet and irritable bowel syndrome: an update from a UK consensus meeting

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