Gut microbiome dysbiosis and dietary modifications are associated with Polycystic Ovary Syndrome in women of reproductive age.

This systematic review evaluated the relationship between gut microbiome alterations and Polycystic Ovary Syndrome (PCOS) in women of reproductive age. The analysis focused on gut microbiome dysbiosis, dietary modifications, probiotic/prebiotic supplementation, and fecal microbiota transplantation as interventions or exposures. The review did not report specific sample sizes, follow-up durations, or statistical measures such as p-values or confidence intervals for the primary outcomes.

The review identified that gut dysbiosis and intestinal barrier dysfunction play a pivotal role in the onset and progression of PCOS. Additionally, gut microbiota are described as crucial regulators in PCOS development, characterized by shifts in microbial communities including bacteria, fungi, and viruses. Critical metabolites, specifically short-chain fatty acids, bile acids, and tryptophan metabolites, were noted to modulate host metabolism and reproductive function.

Safety and tolerability data, including adverse events, serious adverse events, discontinuations, and overall tolerability, were not reported in the review. The study limitations include the lack of reported absolute numbers and specific effect sizes for the outcomes. Funding sources and potential conflicts of interest were not reported. The review notes that while evidence suggests an association, causality is not explicitly defined beyond terms like 'pivotal role' and 'crucial regulators'.

The practice relevance of this review is that it establishes a strong theoretical foundation for innovative microbiome-based therapeutics. Clinicians should interpret these findings as supportive of a biological link rather than proof of efficacy for specific interventions, given the observational nature of the evidence and the absence of direct comparative data.