SDI Productions/Getty Images / E+ Girls in the U.S. are getting their first menstrual period about 6 months earlier on average than they did in the 1950s and '60s. And more girls are beginning ...

A concerning new study conducted by Dr. Shruthi Mahalingaiah of the Harvard T.H. Chan School of Public Health has supported the claim that American girls are getting their periods earlier in life. The ...

Girls who grow up eating a healthier diet than their peers may be less likely to get their first menstrual periods at an earlier age — regardless of height or body mass index — a new study suggests.

For girls, starting their period is inevitable. But the age when a child’s period begins, called menarche, can tell them a little about their health later in life. Menarche that begins “anytime ...

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 ...

It doesn't have to be awkward.

There is unexpectedly large variation in height growth in girls after their first period. Every second girl grows either more or less in length than the 6-8 centimeters that is considered standard.

Anna Lee Beyer writes about mental health, relationships, parenting, and books for Huffington Post, Romper, Slate, Glamour, Parents, and others. A first menstrual cycle usually occurs between the ages ...

Girls in the U.S. are getting their first period earlier than in decades past. Researchers say there are multiple factors causing early puberty, including obesity and environmental pollutants. Girls ...