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Excessive screentime before bed and during the night disrupts sleep.

Studies have searched for reasons screentime has this effect.

Exposure to blue light, once thought to be responsible, has been found to have little effect.

There are steps you can take to reduce the harmful effects of screentime.

In previous posts, I have written about how excessive use of smartphones, tablets, and other screens at night is related to insufficient sleep in children and adolescents. In April, I attended an invited address on that topic by Dr. Barbara Galland at the International Pediatric Sleep Association in Florence, Italy. In her presentation, Unravelling the Digital Impact: Screens and Sleep, she summarized many studies that have been conducted in recent years. A 2024 paper in Sleep Medicine Reviews by a........

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