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Purpose of review This review summarizes recent progress in the diagnosis and management of irritable bowel syndrome, with a focus on dietary and microbiota aspects. Recent findings From a pathophysiological point of view, IBS is a multifactorial condition with both peripheral (transit) as central (visceral hypersensitivity, anxiety, depression) contribution in a cumulative fashion to the symptom pattern and severity. More recently, the focus has shifted to diet and microbiota. The number of dietary options that can be used for IBS and the understanding of determinants of their efficacy is rapidly increasing. Several studies have confirmed the efficacy of the low fermentable oligosaccharides, disaccharides, monosaccharides and polyols (FODMAP) diet. Sucrose-isomaltase deficiency has emerged as pathogenetic mechanisms in a subset of patients, who do not respond to low FODMAP diet but may respond to starch and sucrose elimination. Herbal remedies, probiotics and secretagogues have been the topic of additional treatment trials. The efficacy of fecal microbiota transplantation in IBS is variable across studies, but donor selection is emerging as a critical factor. Summary Irritable bowel syndrome has evolved into a disorder of interaction between dietary factors and gut microbiota, with impact on bowel symptoms as well as extra-intestinal, central, symptoms. Dietary adjustments and treatments targeting the gut microbiota are areas of active research and clinical progress.
Purpose of review This review summarizes recent progress in the diagnosis and management of irritable bowel syndrome, with a focus on dietary and microbiota aspects. Recent findings From a pathophysiological point of view, IBS is a multifactorial condition with both peripheral (transit) as central (visceral hypersensitivity, anxiety, depression) contribution in a cumulative fashion to the symptom pattern and severity. More recently, the focus has shifted to diet and microbiota. The number of dietary options that can be used for IBS and the understanding of determinants of their efficacy is rapidly increasing. Several studies have confirmed the efficacy of the low fermentable oligosaccharides, disaccharides, monosaccharides and polyols (FODMAP) diet. Sucrose-isomaltase deficiency has emerged as pathogenetic mechanisms in a subset of patients, who do not respond to low FODMAP diet but may respond to starch and sucrose elimination. Herbal remedies, probiotics and secretagogues have been the topic of additional treatment trials. The efficacy of fecal microbiota transplantation in IBS is variable across studies, but donor selection is emerging as a critical factor. Summary Irritable bowel syndrome has evolved into a disorder of interaction between dietary factors and gut microbiota, with impact on bowel symptoms as well as extra-intestinal, central, symptoms. Dietary adjustments and treatments targeting the gut microbiota are areas of active research and clinical progress.
Irritable bowel syndrome (IBS) is a highly prevalent disorder of brain–gut interaction with a significant impact on quality of life. Coffee is a widely consumed beverage with numerous bioactive compounds that have potential effects on human health and disease states. Current studies on the effect of regular coffee consumption on the risk of developing IBS symptoms have yielded conflicting results. This systematic review and meta-analysis aimed to determine whether coffee intake is associated with developing IBS. A systematic literature search was performed in three electronic databases, namely PubMed, EMBASE, and The Cochrane Library, from inception until 31 March 2023. All original studies reporting associations between coffee intake and IBS were considered for inclusion. Odds ratios (ORs) were calculated for each study, and estimates were pooled, and where appropriate, 95% confidence intervals (95% CI) and p-values were calculated. Eight studies comprising 432,022 patients were included in the final meta-analysis. Using a fixed-effects model, coffee drinkers (any intake) had a reduced likelihood of developing IBS compared to controls, with a pooled OR of 0.84 (95% CI: 0.80 to 0.84). Sensitivity analysis confirmed the stability of the estimates. Future research should prioritise prospective cohort studies that are robust and closely track the development of incident IBS in previously healthy individuals.
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