The vaginal microbiome is the ecosystem of bacteria, yeasts and other microorganisms that live inside your vagina. It's mostly made up of lacrobacilli: good bacteria that produce lactic acid and keep the vaginal pH acidic, to prevent infections. Your vaginal flora—sometimes referred to as vaginal microbiota—is crucial for overall health. It affects everything from your ability to fight off infections to your likelihood of getting pregnant, miscarrying, and even of developing certain cancers.
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