What causes PCOS?
Doctors do not know what causes PCOS. If you have PCOS, you may have a problem with the way your body uses blood sugar (glucose). Because of this problem, the hormone levels that control your ovaries and menstrual periods can become abnormal.
Polycystic Ovary Syndrome: It's Not Just Infertility by MH Hunter, MD, and JJ Sterrett, PHARM.D (American Family Physician September 01, 2000, http://www.aafp.org/afp/20000901/1079.html)
Written by familydoctor.org editorial staff