Teen Sleep Disruption Linked to Phone Use, Experts Warn

Adolescents require up to 11 hours of sleep per night, significantly more than adults, to support crucial brain and body development. However, a growing body of evidence suggests that a common habit among teens—excessive nighttime phone use—is severely disrupting their sleep patterns, with potentially serious implications for their well-being.

Recent research utilizing smartphone apps and Fitbits to track phone activity and sleep patterns has revealed a direct correlation between late-night phone usage and reduced sleep. For every 30 minutes spent on a phone after 10 p.m., teens were found to fall asleep an average of 26 minutes later, wake up 11 minutes later, and consequently get nearly 13 minutes less sleep. The study also highlighted that using a phone within five minutes of attempting to sleep led to more disrupted sleep, particularly in the initial half-hour, with each minute of phone use correlating to about a minute of wakefulness after initially falling asleep.

This period of late-night phone engagement is predominantly spent on social media platforms such as TikTok, YouTube, and Snapchat. Data indicates that teens spend an average of 44 minutes per night on social media after 8 p.m., with other app categories accounting for less than six minutes. Social media usage was reported on more than half of the nights measured.

Dr. Daniel Bigman, a child and adolescent psychiatrist and sleep medicine physician at Northwell Health, explained that the issue extends beyond just social media. "Any kind of activity" on phones can be stimulating, sending signals to the brain that counteract the natural winding-down process required for sleep. He specifically noted that the light emitted from screens can disrupt the body's natural sleep-wake cycle.

While previous studies relied on self-reported data, which can be prone to inaccuracies, this new research offers more objective insights. The findings reinforce the notion that late-night phone use is detrimental to sleep health. Bigman advises limiting phone use before bedtime and replacing it with less stimulating activities that promote a conducive sleep environment, such as reading, listening to music, or practicing relaxation exercises.

"We're getting more specific advice or specific support towards reducing phone usage and reducing stimulation in the evening, especially before bedtime," Bigman stated, emphasizing the importance of establishing healthy sleep hygiene. He also suggested that encouraging good habits is more effective than punitive measures when addressing teen phone use and sleep patterns. The consequences of chronic sleep deprivation in teens can include increased stress, anxiety, depressed mood, daytime sleepiness, lower motivation, and difficulties with impulse control and decision-making, according to Bigman. He stressed that