Epidemiology
The prevalence of PCOS depends on the choice of diagnostic criteria. One community-based prevalence study using the Rotterdam criteria found that about 18% of women had PCOS, and that 70% of them were previously undiagnosed.
One study in the United Kingdom concluded that the risk of PCOS development was higher in lesbian women than in heterosexuals. However, two subsequent studies of women with PCOS have not replicated this finding.
Read more about this topic: Polycystic Ovary Syndrome