Table 1.

Summary of composition changes of microbiomes in PCOS.

Microbiomes composition	Outcomes
Gut Microbiomes
Decrease of α diversity	Girls with PCOS had decreased α-diversity compared to non-PCOS.
Decrease of β diversity	The β diversity of PCOS was significantly decreased.
Vaginal Microbiomes
Decreased of Lactobacillus	In PCOS women, Lactobacillus decreased significantly.
Increased of Chlamydia trachomatis	In PCOS women, Lactobacillus decreased significantly.
Increased of Prevotella	2 2In PCOS women, Lactobacillus decreased significantly.