Girls in the U.S. are getting their first menstrual period about 6 months earlier on average than they did in the 1950s and ‘60s. And more girls are beginning menstruation before the age of 9, which ...

A recent study indicates that girls of color, particularly Black girls, are beginning their menstrual cycles at younger ages than their peers. While the exact reasons for this phenomenon remain ...

Girls are getting their periods earlier and it is taking longer for their menstrual cycles to regulate – trends that are putting more girls at risk of health problems later in life. The average age of ...

Researchers say multiple factors are likely impacting early puberty, including obesity, stress and endocrine-disrupting hormones which are widespread in the environment. (SDI Productions/Getty Images ...

This story is free to read because readers choose to support LAist. If you find value in independent local reporting, make a donation to power our newsroom today. Listen 4:10 Girls in the U.S. are ...