Study Finds Teens' Late Night Media Use Comes at a Price

Staying up late to play video games, surf the Internet and send phone text messages may lead to learning problems, mood swings, anxiety and depression in children, a pilot study suggests.
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The research, conducted at the Sleep Disorders Center at JFK Medical Center in Edison, N.J., found that children who snuck time on their cell phones, computers and other electronic devices after supposedly going to sleep had a greater chance of sleep disorders that cause other difficulties.

"These activities are not sleep-promoting, like reading a novel or listening to music. They stimulate the brain and depress normal sleep cycles," said study author Dr. Peter G. Polos.