Add Yahoo as a preferred source to see more of our stories on Google. A new study out of Brazil links early or late menstruation onset to health struggles later in life. How the timing of your first ...

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.

Can being overweight make girls get their periods earlier Read ahead to know how hormones puberty timing PCOS risk and what signs to look for ...