unhappy or even sad, NSF's 2006 Sleep in America poll found that many adolescents exhibit symptoms of a depressive mood on a frequent if not daily basis, and these teens are more likely to have sleep problems.
The NSF poll calculated depressive mood scores for each of the 1,602 poll respondents by measuring adolescents' responses to four mood states (using a scale of "1" to "3" where 1 equals "not at all" and 3 equals "much"):
The results showed that about half (46%) of the adolescents surveyed had a depressive mood score of 10 to 14, 37% had a score of 15 to 19, and 17% had a score of 20 to 30; these scores are considered low, moderate and high respectively.
Most notably, those adolescents with high scores ranging from 20 to 30 were more likely than those with lower scores to take longer to fall asleep on school nights, get an insufficient amount of sleep and have sleep problems related to sleepiness. In fact, 73% of those adolescents who report feeling unhappy, sad, or depressed also report not getting enough sleep at night and being excessively sleepy during the day.
While many adults may think that adolescents have things easy or don't have much to worry about – the opposite seems true according to the NSF poll. Most adolescents were likely to say they worried about things too much (58%) and/or felt stressed out/anxious (56%). Many of the adolescents surveyed also reported feeling hopeless about the future, or feeling unhappy, sad or depressed much or somewhat within the past two weeks of surveying.
Research shows that lack of sleep affects mood, and a depressed mood can lead to lack of sleep. To combat this vicious cycle, sleep experts recommend that teens prioritize sleep and focus on healthy sleep habits. Teens can start by getting the 8 to 10 hours of sleep they need each night, keeping consistent sleep and wake schedules on school nights and weekends, and opting for relaxing