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U.S. Teens Losing More Sleep Over Time

Over the last 20 years, U.S. teens have been getting less sleep, a new study finds. Between 1991 and 2012, researchers surveyed more than 270,000 students in 8th, 10th and 12thgrades. Each year, they asked the students how often they got 7 or more hours of sleep, as well as how often they got less sleep than they needed. Among 15-year-olds, 72% reported getting 7 or more hours of sleep a night in 1991. By 2012, the number dropped to 63%. The number of teens who reported sleeping 7 or more hours a night dropped dramatically between the ages of 13 and 18 years. About two-thirds of 13-year-olds sleep at least 7 hours a night. Only about one-third of 18-year-olds get at least 7 hours of sleep. Compared with boys, girls are less likely to regularly get 7 or more hours of sleep. Teens with less-educated parents came up short on sleep.

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