There is a widespread belief that if you get your period early, your reproductive life will end early, and if you get it late ...

I remember the shock of getting my first period, and my mom reassuring me at the time by telling me that pretty much every woman you see walking down the street experiences periods, too. But, being ...

Your first period after childbirth may take some time to return, especially if you are breastfeeding. It's possible to become pregnant before your first postpartum period, as ovulation occurs before ...

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 ...

A female’s first menstrual period, known as menarche, occurs during puberty. Menstruation indicates that the body is mature enough for reproduction. About 98% of girls begin their periods by age 15.

SAN FRANCISCO—The age at which a woman has her first period can offer valuable clues about her long-term risk for conditions like obesity, diabetes, heart disease and reproductive health issues, ...