What is causing girls to get their period at an earlier age?
The average age of menarche and breast development is becoming progressively lower – and genetics and the environment are ...
What should teenagers know about menarche?
Menarche, the onset of menstruation, marks a significant milestone in a teenager's life, typically occurring between the ages of 10 and 15. Hormonal changes trigger the development of secondary ...
Medscape2 个月
Early Life Circumstances and Their Impact on Menarche and Menopause
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 ...
来自MSN3 个月
Why are girls starting puberty earlier?
The percentage of girls experiencing menarche, or the onset of menstruation before the age of 11, increased from 8.6% to 15.5%, and the number of girls starting menstruation before age 9 more than ...