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The death toll from wildfire smoke

A UCLA study shows smoke from increasing wildfires in California caused up to 55,700 deaths in 11 years.

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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.

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Menstrual Cycles Starting Earlier and Taking Longer to Regulate

Menstrual Cycles Starting Earlier and Taking Longer to Regulate
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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
yahoo.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from yahoo.com Daily Mail and Mail on Sunday newspapers.

United statesRobert hiattShruthi mahalingaiahZifan wangHarvard chan schoolNutrition examinationHarvard th chan schoolNational healthNational institute of environmental health sciencesApple women health studyWashington postPublic healthApple womenHealth studyNational instituteEnvironmental health sciences