Add Yahoo as a preferred source to see more of our stories on Google. A new study reports associations between specific hormones, higher BMI, and stress with earlier puberty in girls, a trend with ...

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 ...

Zaria was just 9 years old when a nurse practitioner delivered news that rocked her world: The young girl was already showing signs of puberty development, and she was on track to get her period ...

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 ...

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 ...

Editor’s note: The podcast Chasing Life With Dr. Sanjay Gupta explores the medical science behind some of life’s mysteries big and small. You can listen to episodes here. (CNN) — Puberty: It’s one of ...

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 ...