A new study suggests that growing up in poverty accelerates biological development. For adolescent girls, this early onset of ...

A recent article in Nature, “Girls are starting puberty younger—why, and what are the risks?”, highlights a trend that has increasingly drawn the attention of scientists and clinicians: Girls are ...

A 10-year Danish study finds puberty is starting earlier in kids, linking the shift to pregnancy, weight, stress, and genetics.

Tanner stages track five milestone physical changes during puberty for both boys and girls. Early puberty in females starts before age 8, and before age 9 in males. Delayed puberty is when girls don't ...