Children are starting puberty earlier than in the past, potentially due to a combination of environmental, lifestyle, and metabolic factors – but the reasons why are still puzzling scientists. On ...

A girl's genetics can indirectly influence the age when she has her first period, by accelerating her weight gain in childhood, a new study finds. A number of other genes also can directly affect the ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Data has shown girls around the world have begun starting puberty ...

Add Yahoo as a preferred source to see more of our stories on Google. Kids with ovaries go through distinct physical changes during puberty. Discover the stages of puberty for girls and how parents ...

Puberty has a clear physiological signpost in girls: sooner or later, they have their first period. That’s been a critical part of identifying genes that influence when puberty starts in girls, but it ...

The average age of the onset of puberty has been dropping in the last century—with some girls starting to develop breasts as early as age six or seven. These shifts in the reproductive development ...

When the COVID-19 pandemic shut down much of the U.S. in March 2020, life came to a standstill and millions of people experienced drastic changes in their lifestyles. For adolescents, this meant ...