Preparing your child for their first period—and roughly 40 more years of menstruation that follow—can feel like a big responsibility. But this milestone doesn't have to be overwhelming or awkward. In ...

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.

The age you got your first period, also called menarche, is one of those milestones people remember forever. It feels loaded with meaning, and for good reason. Hormones, growth, fertility, and the ...