More girls are getting their first period before the age of 9, raising concerns among doctors. Experts explain why early ...
See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Girls in the United States are getting their periods earlier, and it's ...
(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) Marni Sommer, Columbia University Mailman School of Public Health (THE CONVERSATION) ...