Kara McKinley, Ph.D. – 2022
Kara McKinley, Ph.D. Assistant Professor Harvard University Twitter Globe Envelope Maturation of the Uterus During Puberty The first menstrual period is a defining event of puberty in girls. The onset of menstruation, which is called menarche, usually occurs between ages 11 and 15. In the years following menarche, girls frequently experience unpredictable or heavy menstrual […]