Girls are entering puberty earlier than in previous decades, with studies showing declining ages of breast development and first periods. Research highlights genetics, weight, nutrition, lifestyle and ...

Do you remember how old you were when you got your first period? And whether it was considered early, late or about average? Some parents are reportedly overhauling lunchboxes and shampoos and doing ...

Girls can grow dramatically different amounts after their first period, with one study finding increases ranging from almost zero to more than 31 centimeters. Earlier menstruation was generally ...

Is it true that girls in the United States, particularly girls of color, are getting their periods earlier than past generations? A new study of 71,341 women supports the growing concern that the age ...

Girls in the United States have been getting their periods at younger ages over the last fifty years, with additional variation among races, according to a new study. The study published in the JAMA ...

Researchers have linked early menstruation to an increased risk of health problems later in life. By Alisha Haridasani Gupta A new study, published Wednesday, found that girls are starting their ...

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.

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 ...