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Why are girls starting puberty earlier?

There is a growing pattern of children entering puberty at younger ages. Girls who begin menstruating earlier are at risk for more serious health conditions.

United statesShruthi mahalingaiahZifan wangLauren houghtonJuliana deardorffNorthwestern university feinberg school of medicineUniversity of californiaColumbia universityGood news newsletterEve feinbergNorthwestern universityFeinberg schoolAdolescent health

Girls periods starting earlier and becoming more irregular, study finds

Girls have been getting their periods earlier and earlier for more than half a century. And as early onset increased, it has taken longer and longer for menstrual cycles to become regular. Both of those facts carry the possibility of health challenges as the girls get older.

United statesRobert hiattZifan wangShruthi mahalingaiahHarvard th chan schoolNational healthApple women health studyHarvard chan schoolNutrition examinationWashington postNational institute of environmental health sciencesPublic healthApple womenHealth studyNational instituteEnvironmental health sciences

Age of first period declines - could be obesity or pollution

A big US study has shown that the average age for girls' first period is now under 12 years old.

Shruthi mahalingaiahZifan wangRochelle courtenayHarvard chan schoolBig surveyBloody big surveyHarvard university chan school

Kids are starting menstruation earlier, study shows Here is what that means for their health

Starting menstruation is an important sign of health. A new study shows that the trend of children starting at an earlier age may point to worrying conditions.

United statesZifan wangShruthi mahalingaiahNorthwestern university feinberg school of medicineApple women health studyApple healthHarvard universityPublic healthApple womenHealth studyEve feinbergNorthwestern universityFeinberg school

Early Menstruation in Black Girls Linked to Socioeconomic Status

Early Menstruation in Black Girls Linked to Socioeconomic Status
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United statesZifan wangPatra rhodes wilsonNational institutes of healthPublic healthApple womenHealth studyNational institutesEarly menstruationSocioeconomic status

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