Adolescent sleep misalignment: a chronic jet lag and a matter of public health.

Sleep is a key element, both physiologically and psychologically, in adolescent development. The prevalence of sleep disorders in western countries is important, as with age the sleep-wake cycle of adolescents becomes irregular and delayed in relation with later sleep onset and waking time resulting in rhythm desynchronization. A large number of adolescents sleep for 7-8h instead of 9-10h per night, which can lead to a cumulative sleep debt with fatigue, behavioral problems and poor academic achievement. The effect of electronic media use (such as television, mobile phone, computer, and electronic gaming) on sleep has been the object of several international studies, though pubertal changes may also impact adolescent sleep. Adolescents and their parents should be educated by professionals, including physicians and nurses, on the key role of sleep in adolescent well being and quality of life. A number of basic rules are proposed to improve sleep in adolescents. The permanent social jet lag experienced by a number of adolescents should be considered as a matter of public health.