A new study out of Brazil links early or late menstruation onset to health struggles later in life. How the timing of your first period can influence your risk of obesity, high blood pressure and ...

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 ...

Puberty is the time when children's bodies start to make hormones that lead to physical changes and signs of maturation.

A recent study analyzed data from more than 71,000 females in the United States using the Apple Research App on their smartphones. The findings, published May 29 in JAMA Network Open, indicate the ...

A new study led by researchers at Harvard T.H. Chan School of Public Health shows the average age at which girls are getting their periods has decreased, and the average time it takes for the ...

Your period could be crampin’ your style — and your future health. Girls are reaching puberty faster than previous generations, a phenomenon perplexing researchers. The average age of the start of ...

Girls in the U.S. are getting their first period earlier than in decades past. Researchers say there are multiple factors causing early puberty, including obesity and environmental pollutants. Girls ...

Share on Pinterest Research shows that girls are getting their first period earlier than in previous decades, which may be tied to rising obesity rates. MStudioImages/Getty Images A new study finds ...