Around half of teenage girls experience moderate to severe period pain. The mechanical force of the uterus contracting and inflammatory chemicals such as prostaglandins contribute to this pain.

Medically reviewed by Cordelia Nwankwo, MD Key Takeaways Breast development usually starts about two years before the first ...

For decades, most girls experienced their first menstrual period between the ages of 11 and 13. Today, however, doctors are seeing a noticeable shift. An increasing number of girls are entering ...

Menstruation is a natural biological process experienced by nearly half the global population. Yet, for many girls, the first period arrives as a surprise—often misunderstood, feared, or even ...

Eating a healthy diet as a child is linked to girls having their first menstrual period at an older age than those who consumed a less healthy diet, according to a new study. The findings remained ...

Researchers looked at health data which over 71,000 women born between 1950 and 2005 self-reported on their iPhones and Apple watches. New research shows girls are getting their first period earlier, ...