Girls are hitting puberty younger than ever, thrusting them prematurely into a new world of wild mood swings, physical discomfort, and self-doubt.
The phenomenon is called precocious puberty, which is being detected more and more in the Us. Decades of research point to a trending decline in the age of puberty onset.
In dozens of countries, the age of puberty in girls has dropped by about three months per decade since the 1970s. Now, it is not out of the