What Is Polycystic Ovarian Syndrome (PCOS)?
Medically reviewed by Leyla Bilali, RN
Polycystic ovarian syndrome, or PCOS, is an endocrine disorder and a common cause of infertility in women. In PCOS, hormones that affect the reproductive system are abnormal, leading to irregular or absent ovulation. PCOS is a common disorder, affecting roughly 4% to 12% of women.(1)
1. Bozdag G, Mumusoglu S, Zengin D, Karabulut E, Yildiz BO. The prevalence and phenotypic features of polycystic ovary syndrome: A systematic review and meta-analysis. Hum Reprod. 2016;31(12):2841-2855. doi:10.1093/humrep/dew218