Dr. Lyndsay's Guest Blog:
She's Your Daughter and She Needs You
Over the past decade research has indicated that girls are getting their periods earlier and earlier. Experts weighed in about the ramifications of the early onset of puberty. Higher risk for cancer, violent victimization and depression made the list. (Depression in girls can lead to cutting, eating disorders, substance abuse, and sexual promiscuity.) Scientists explored the possible causes of this "trend". Turns out, according to the research done by biologist Sandra Steingraber, American girls' onset of menarche (getting their first period) has pretty much stayed the same for the past 35 years. That is, 12.8 years to 12.6 years. What has changed fairly dramatically is the onset of thelarche (the development of breasts). According to the studies Steingraber reviewed in her ground-breaking 1998 book Living Downstream: A Scientist's Personal Investigation of Cancer and the Environment, "By age 8, 14% of American girls have breasts." |
