Endometriosis can start as early as puberty, causing severe period pain in teenage girls. Early diagnosis is vital to preventing fertility issues and improving the quality of life.

Women's Health. 2009;5(2):175-190. As for age at menarche, a number of studies have examined the association between early life factors and age at natural menopause ( Table 2) and these can be ...

For the first time, the researchers investigated the link between particular diets and the age that periods first started (menarche). They are also the first to examine whether BMI might have a ...

Methods: Fifteen Greek (mean (SEM) age 14.5 (0.2) years) and 30 Canadian (mean (SEM) age 14.7 (0.4) years) rhythmic gymnasts were surveyed for age at menarche, menstrual frequency, and training ...