Girls are starting puberty a year earlier than in the 1970s, study

Researchers found that the age at which girls begin to develop breasts has fallen by about three months per decade since the 1970s.

Girls are reaching puberty earlier and earlier. No one is sure why

Why More Kids Are Starting Puberty Earlier Than Ever Before

With puberty starting earlier than ever, doctors urge greater awareness and care

Puberty Starts Earlier Than It Used To. No One Knows Why. - The New York Times

The Fractious Evolution of Pediatric Transgender Medicine

Why Are More Children Going Through Puberty At A Younger Age? - Texas A&M Today

Puberty Starts Earlier Than It Used To. No One Knows Why. - The New York Times

Puberty Comes Earlier and Earlier for Girls

America's premature puberty phenomenon explained: Girls are starting transition as young as SIX