The biology of adolescent sleep leads to a later sleep onset time, which doesn’t pair well with early school start times, reports The New York Times.

All these adolescents should be screened for depression and anxiety, Dr. Spinks-Franklin said; both can affect sleep onset or sleep maintenance. And both are alarmingly common in adolescents.

Chronic sleep deprivation can be caused by depression or anxiety, but it can also put kids at risk for depression and anxiety, as well as for obesity and diabetes.

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