A 2017 study in BMC Psychiatry found 31 percent of girls and young women have symptoms of anxiety compared to 13 percent of boys and young men. Psychologist and CBS News contributor Lisa Damour addresses the growing issue in her new book, "Under Pressure: Confronting the Epidemic of Stress and Anxiety in Girls." Damour joins "CBS This Morning" to discuss why girls face unique pressures even today.

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