Eumenorrhoeic

An analysis of 101,073 women in the Nurses' Health Study II reported that over an 8-year period, the conversion rate to type 2 diabetes amongst oligomenorrhoeic women was approximately twice than that for eumenorrhoeic women, regardless of whether the oligomenorrhoeic women are obese or lean, indicating that oligomenorrhoea was an independent predicator of type 2 diabetes.

By contrast, women distance runners with long-term amenorrhoea show reduced bone formation, compared with eumenorrhoeic runners or age-matched sedentary eumenorrhoeic women (Zanker and Swaine 1998).

Menstrual irregularities increases the risk for stress fracture between two and four times compared with eumenorrhoeic females (Brukner & Bennell 2001).