Teenagers undergo a natural biological shift during puberty that delays their internal sleep-wake rhythms by two to three hours, creating a fundamental mismatch with traditional early school start times. This systemic misalignment forces adolescents into chronic sleep deprivation, manifesting as "social jet lag" and significantly increasing the risk of automobile accidents and mental health struggles. While digital devices exacerbate sleep disruption by capturing attention, they are not the primary cause of this developmental phase shift. Furthermore, sleep deprivation often mimics ADHD symptoms, and conditions like narcolepsy are frequently misdiagnosed as laziness, delaying necessary treatment. Prioritizing later school start times serves as a powerful public health intervention, demonstrably improving academic performance, reducing traffic accidents, and enhancing overall adolescent well-being. Dr. Craig Kanapari, Director of the Pediatric Sleep Center at Yale Medical School, provides these insights into the physiological and environmental factors shaping teenage sleep.
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