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Girls earlier menstruation and irregular cycles spark alarm

Girls earlier menstruation and irregular cycles spark alarm
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Girls periods starting earlier and becoming more irregular: Study

Girls periods starting earlier and becoming more irregular: Study
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Age at menarche falling, with longer time to cycle regularity: Apple Women s Health Study

Age at menarche falling, with longer time to cycle regularity: Apple Women s Health Study
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Girls periods are starting earlier and staying irregular longer – Deseret News

Girls periods are starting earlier and staying irregular longer – Deseret News
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United statesZifan wangRobert hiattShruthi mahalingaiahWashington postApple women health studyNational healthNutrition examinationNational institute of environmental health sciencesHarvard th chan schoolHarvard chan schoolPublic healthApple womenHealth studyNational instituteEnvironmental health sciences

U S Girls Are Getting Their Periods Earlier And With Less Regularity: Study

U S Girls Are Getting Their Periods Earlier And With Less Regularity: Study
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