Ma, Lu and Yan, Yating and Webb, Richard and Mehrabani, Sanaz and Xin, Bao and Sun, Xiaomin and Wang, Youfa and Mazidi, Mohsen (2023) Psychological Stress and Gut Microbiota Composition: A Systematic Review of Human Studies. Neuropsychobiology. ISSN 0302-282X
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Abstract
Introduction: 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. Methods: 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. Results: 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 Lachnospira, Lachnospiraceae, Phascolarctobacterium, Sutterella, and Veillonella, and positively associated with the abundance of Methanobrevibacter, Rhodococcus, and Roseburia. However, it was not possible to determine the influence of age, sex, or ethnicity due to the limited studies included. Conclusion: 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.
| Item Type: | Article |
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| Additional Information and Comments: | © 2023 The Author(s). Published by S. Karger AG, Basel. This work is licensed under a Creative Commons Attribution 4.0 International License . |
| Faculty / Department: | Faculty of Human and Digital Sciences > School of Health and Sport Sciences |
| Depositing User: | Richard Webb |
| Date Deposited: | 12 Sep 2023 08:12 |
| Last Modified: | 12 Sep 2023 08:12 |
| URI: | https://hira.hope.ac.uk/id/eprint/4020 |
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