More girls are getting their first period before the age of 9, raising concerns among doctors. Experts explain why early ...

Las Vegas teenager Chloe Kim wants young girls to know exactly what’s coming as their bodies change — so she wrote the book ...

Everyday pollutants could have hormonal effects on girls and cause puberty to start too early.

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 ...