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- W4386508145 abstract "<b><i>Introduction:</i></b> The associations between psychological stress and gut microbiota composition are not fully understood. This study investigated associations between psychological stress and gut microbiota composition and examined the potential modifying effects of age, sex, and ethnicity on such associations. <b><i>Methods:</i></b> A systematic literature search was conducted using PubMed, Web of Science, PsycINFO, and Embase databases for studies published until November 2021 which examined associations between psychological stress and gut microbiota composition. <b><i>Results:</i></b> During the search process, 10,790 studies were identified, and after screening, 13 met the eligibility criteria and were included. The median sample size was 70, and the median age of participants was 28.0 years. Most of the included studies did not report associations between measures of alpha- and beta diversity of the gut microbiota composition and psychological stress. A few studies reported that the Shannon index, Chao 1, Simpson index, and weighted UniFrac were negatively associated with psychological stress. Significant reductions in several taxa at the phyla-, family-, and genus-levels were observed in participants with higher psychological stress. At the phylum level, the abundance of Proteobacteria and Verrucomicrobia were negatively associated with psychological stress. At the family-level, no more than two studies reported associations of the same microbiota with psychological stress. At the genus level, the following results were found in more than two studies; psychological stress was negatively associated with the abundance of <i>Lachnospira,</i> Lachnospiraceae, Phascolarctobacterium<i>, Sutterella,</i> and <i>Veillonella</i>, and positively associated with the abundance of <i>Methanobrevibacter, Rhodococcus,</i> and <i>Roseburia</i>. However, it was not possible to determine the influence of age, sex, or ethnicity due to the limited studies included. <b><i>Conclusion:</i></b> Our findings provide evidence that psychological stress is associated with changes in the abundance of the gut microbiota. Larger sample longitudinal studies are needed to determine the causal relationship between psychological stress and the gut microbiota." @default.
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- W4386508145 date "2023-01-01" @default.
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- W4386508145 title "Psychological Stress and Gut Microbiota Composition: A Systematic Review of Human Studies" @default.
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- W4386508145 doi "https://doi.org/10.1159/000533131" @default.
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