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Thursday, September 29, 2016
My daughter is 12 and she has not started her period yet.
That is not unusual, as 12 is about the average age that a young girl will start her periods. What that means in a practical sense is that half of the girls will be older when they start their periods.
Michael Spigarelli, MD, PhD
Formerly, Associate Professor of Pediatrics and Internal Medicine
College of Medicine
University of Cincinnati