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.

Add Yahoo as a preferred source to see more of our stories on Google. Kids with ovaries go through distinct physical changes during puberty. Discover the stages of puberty for girls and how parents ...

Have you ever wondered why pimples seem to appear out of nowhere right before your period? This type of acne, referred to as hormonal acne, is closely linked to the natural hormonal changes that occur ...

From estrogen dips to stress spikes, dermatologists explain the real reason pre-period acne appears - and why it’s a ...