Santé de la population
octobre 30, 2017
Teens are getting less sleep than they did before smartphones became commonplace, prompting concerns about potentially serious health consequences, researchers say. A study published in Sleep Medicine examined data from two surveys of U.S. adolescents conducted over many years and including questions about how many hours of sleep they got. The researchers looked at other factors besides electronic devices that might affect the amount of sleep teens were getting, including working after school, homework and watching TV, but the number of hours spent on those activities remained "relatively stable or reduced" between 2009 and 2015.