Cited by 590Gastrointestinal motility and disordersGut microbiota and healthMicrobial Metabolites in Food Biotechnology

Fermentable carbohydrate restriction reduces luminal bifidobacteria and gastrointestinal symptoms in patients with irritable bowel syndrome

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Staudacher, Heidi M., Lomer, Miranda C.E., Anderson, Jacqueline L., Barrett, Jacqueline S., Muir, Jane G., Irving, Peter M., Whelan, Kevin·2012·The Journal of Nutrition

Abstract

Preliminary studies indicate that dietary restriction of fermentable short-chain carbohydrates improves symptoms in irritable bowel syndrome (IBS). Prebiotic fructo-oligosaccharides and galacto-oligosaccharides stimulate colonic bifidobacteria. However, the effect of restricting fermentable short-chain carbohydrates on the gastrointestinal (GI) microbiota has never been examined. This randomized controlled trial aimed to investigate the effects of fermentable carbohydrate restriction on luminal microbiota, SCFA, and GI symptoms in patients with IBS. Patients with IBS were randomized to the intervention diet or habitual diet for 4 wk. The incidence and severity of symptoms and stool output were recorded for 7 d at baseline and follow-up. A stool sample was collected and analyzed for bacterial groups using fluorescent in situ hybridization. Of 41 patients randomized, 6 were withdrawn. At follow-up, there was lower intake of total short-chain fermentable carbohydrates in the intervention group compared with controls (P = 0.001). The total luminal bacteria at follow-up did not differ between groups; however, there were lower concentrations (P < 0.001) and proportions (P < 0.001) of bifidobacteria in the intervention group compared with controls when adjusted for baseline. In the intention-to-treat analysis, more patients in the intervention group reported adequate control of symptoms (13/19, 68%) compared with controls (5/22, 23%; P = 0.005). This randomized controlled trial demonstrated a reduction in concentration and proportion of luminal bifidobacteria after 4 wk of fermentable carbohydrate restriction. Although the intervention was effective in managing IBS symptoms, the implications of its effect on the GI microbiota are still to be determined.

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  • Reducing consumption of carbohydrates and wholegrain cereals lowers the abundance of important butyrate-producing bacteria, including bifidobacteria, as well as SCFAs themselves.

    “Numerous intervention studies in humans show that reducing the consumption of carbohydrates and wholegrain cereals lowers the abundance of important butyrate-producing bacteria, including the probiotic bifidobacteria, as well as SCFAs themselves (121-123).”

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Authors
Staudacher, H. M., Lomer, M. C. E., Anderson, J. L., Barrett, J. S., Muir, J. G., Irving, P. M., & Whelan, K.
Affiliations
  • St Thomas' Hospital (GB)
  • Guy's Hospital (GB)
  • Eastern Health (AU)
  • King's College London (GB)
Corresponding author
Whelan, Kevin
Venue
The Journal of Nutrition
Publisher
Elsevier BV
Published
2012-08
Volume
142
Issue
8
Pages
1510-1518
ISSN
0022-3166 (ISSN-L)
OpenAlex
W2113957312
Cited by
590
References
53
Citations by year
2026: 24 · 2025: 30 · 2024: 21 · 2023: 24 · 2022: 45 · 2021: 61 · 2020: 47 · 2019: 61 · 2018: 54 · 2017: 69 · 2016: 62 · 2015: 39 · 2014: 30 · 2013: 20 · 2012: 1
FWCI
27.95
Type
journal article
Language
en
Open access
Locations
  • Journal of Nutrition (publishedVersion)
  • PubMed (publishedVersion)
  • Deakin Research Online (Deakin University) (submittedVersion)
  • Figshare (submittedVersion, cc-by)
  • Research Portal (King's College London) (submittedVersion)
Funders
King's College London
Topics
  • Health Sciences › Medicine › Gastroenterology › Gastrointestinal motility and disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
  • Health Sciences › Nursing › Nutrition and Dietetics › Microbial Metabolites in Food Biotechnology
Keywords
irritable bowel syndrome, short-chain carbohydrates, Bifidobacterium, gut microbiota, gastrointestinal symptoms, short-chain fatty acids, dietary intervention, stool output
MeSH terms
Adult, Bifidobacterium, Diet, Dietary Carbohydrates, Fatty Acids, Feces, Female, Fermentation, Food Analysis, Humans, Male, Middle Aged, Irritable Bowel Syndrome, Young Adult

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