Effects of probiotic supplementation on the gut microbiota composition of adults: a systematic review of randomized clinical trials

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Abstract

Researchers have associated the therapeutic potential of probiotics with its ability to modulate gut microbiota, which is considered an “invisible organ” of the human body. The present study investigates the effects of probiotic supplementation on the gut microbiota composition of adults. The authors conducted a systematic review of the literature published in six different databases. The search followed PRISMA guidelines and aimed to identify randomized clinical trials on probiotic supplementation. All relevant publications indexed up to May 28, 2021, were retrieved. Then, the authors defined the inclusion and exclusion criteria. Two independent reviewers performed study screening, data extraction, and quality assessment. A total of 2,404 publications were retrieved, and eight studies met the eligibility criteria. The included randomized clinical trials were published between 2015 to 2020. The worldwide studies included adults aged from 18 to 79 years, most of whom were women (66.5%). Only one of the included studies observed significant effects on fecal microbiota composition in the relative abundance of Bacteroidetes and Firmicutes phyla in comparison with the placebo treatment. Overall, this systematic review could not draw consistent conclusions on the effects of probiotic supplementation on the gut microbiota composition of adults.

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APA

Mörschbächer, A. P., Pappen, E., Henriques, J. A. P., & Granada, C. E. (2023). Effects of probiotic supplementation on the gut microbiota composition of adults: a systematic review of randomized clinical trials. Anais Da Academia Brasileira de Ciencias, 95(3). https://doi.org/10.1590/0001-3765202320230037

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