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Teens' Phones Stealing Sleep: Study Reveals Impact
21 Oct
Summary
- Evening smartphone use significantly delays sleep onset for teens.
- Extended phone use after 10 p.m. reduces total sleep time.
- Restless, broken sleep is linked to late-night phone engagement.
Adolescents' late-night smartphone use is directly linked to poorer sleep quality, according to a recent study published on October 19, 2026. The research found that teens engaging with their phones after 10 p.m. experienced delayed sleep onset by an average of 64 minutes and slept approximately 20 minutes less.
This extended screen time contributes to more restless and broken sleep. The study highlighted a dose-dependent effect, where each additional minute of phone use past the teen's average after 10 p.m. exacerbated these sleep disturbances. Lights and stimulating content from phones can signal the brain to stay alert, disrupting the natural sleep-wake cycle.
Experts emphasize the critical need for adequate sleep in teenagers, noting that poor sleep can lead to attention deficits, irritability, increased stress, and mood issues. They recommend replacing stimulating phone activities with calming routines like reading or relaxation exercises to promote better sleep hygiene.
