The polycystic ovary syndrome (PCOS) has genetic, epigenetic, metabolic and reproductive aspects. [1][2][3] The World Health Organization reported an overall prevalence of 3.4% (almost 116 million in 2012) among women worldwide. 4 Yet, the actual prevalence ranges from 2% to 20%, depending on the diagnostic criteria employed, the ethnicity and the screening method used to identify ovulatory and/or androgen dysfunction. The clinical manifestations include ovarian physiology and morphology features, high androgen levels and/or oligo-anovulation.The diagnostic criteria vary depending upon three definitions:• the National Institutes of Health-NIH (1990): oligoanovulation, androgen excess, exclusion of other disorders characterized by menstrual irregularity and hyperandrogenaemia. 5 • the Rotterdam consensus-Rott (2003): oligo/unovulation, excess androgen activity, polycystic ovaries by ultrasound. 6-8 • the Androgen Excess PCOS Society-AES (2006): oligo/ un-ovulation, polycystic ovaries by ultrasound, excess