Adolescents who spent more time doing screen-based activities such as gaming, social messaging, TV watching, or web surfing were more likely to develop symptoms of insomnia and sleep deprivation, according to a study presented at the annual meeting of the Associated Professional Sleep Societies. Researchers are speculating the connection of these symptoms to depression as well. “Higher rates of depressive symptoms among teens may be partially explained through the ubiquitous use of screen-based activities, which can interfere with high quality restorative sleep,” said postdoctoral researcher Xian Stella Li, Ph.D.