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 ...

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 ...

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 menstruation before the age of 9, which ...

All girls get their periods between the ages of 14 and 16. Periods are a natural process in the body. All women experience periods for four to five days a month. During periods, women face many ...

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Girls are getting their periods earlier and it is taking longer for their menstrual cycles to regulate – trends that are putting more girls at risk of health problems later in life. The average age of ...

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.