Polycystic Ovarian Syndrome (PCOS) is a poorly-named and often poorly-understood disease. For one thing, it doesn’t involve ovarian cysts; for another, it’s strongly linked to type 2 diabetes — and that link may run in families, and include increased diabetes risks for men as well as women. Andrea Dunaif, System Chief of Endocrinology Diabetes and Bone Disease for the Icahn School of Medicine, Mount Sinai Health System, a foremost expert on PCOS, gives an overview of the condition and its relation to type 2.