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 ...

Anna Lee Beyer writes about mental health, relationships, parenting, and books for Huffington Post, Romper, Slate, Glamour, Parents, and others. A first menstrual cycle usually occurs between the ages ...

Menstruation is once again a hot topic on social media, thanks to a new health trend known as "cycle syncing." It involves ...

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.

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Nancy Redd Nancy Redd is Wirecutter’s health and grooming writer. Her latest ...

SDI Productions/Getty Images / E+ 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 ...

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 ...