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melatonin

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With school back in session, students are having to readjust from their summer sleeping habits. 

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If you’re having trouble falling asleep at night, blue light from various sources – including electronic devices -- might be a problem. Studies suggest even low levels of blue light can delay secretions in the body of melatonin, a hormone that helps regulate sleep and wake cycles. In this edition of Vital Signs, the scoop on blue light from sleep specialist Dr. John Herman, a professor of psychiatry and pediatrics at UT Southwestern Medical Center.