In 2018, key studies shaped the way we think about environmental factors and their influence on the gut microbiota. These data highlight a new-found appreciation for the role of diet in modifying the gut microbiome and fortifying the intestinal barrier, which ultimately might lead to better treatments for chronic metabolic diseases.
Key advances
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Using a high-fibre diet to target short-chain fatty acid producers in the gut microbiota could assist type 2 diabetes management2.
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Defects in the mucous layer of mice fed a Western-style diet are mediated by gut bacteria and can be rescued by faecal microbiota transplant from chow-fed mice or by prebiotic or probiotic treatment4.
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Environmental factors such as sharing a household play a major part in shaping microbiome composition, with a relatively minor contribution by host genetics7.
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Change history
25 March 2019
In the version of this article published online and in print, the intestinal epithelial barrier depicted in Fig. 1 was drawn incorrectly with the cells oriented in the wrong direction. This error has been corrected for the HTML and PDF versions of the article.
References
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Zou, J. et al. Fiber-mediated nourishment of gut microbiota protects against diet-induced obesity by restoring IL-22-mediated colonic health. Cell Host Microbe 23, 41–53 (2018).
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Rothschild, D. et al. Environment dominates over host genetics in shaping human gut microbiota. Nature 555, 210–215 (2018).
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The author has previously received travel support and honoraria from Beneo GmbH.
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Reimer, R.A. Establishing the role of diet in the microbiota–disease axis. Nat Rev Gastroenterol Hepatol 16, 86–87 (2019). https://doi.org/10.1038/s41575-018-0093-7
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DOI: https://doi.org/10.1038/s41575-018-0093-7
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