Teens who are heavy users of digital devices are twice as likely as infrequent users to show symptoms of attention-deficit/hyperactivity disorder (ADHD), a new study finds. The association is persistent as researchers tracked nearly 2,600 teenagers for two years and report was published in the Journal of the American Medical Association. The study focuses on the mental health consequences of a new generation of ubiquitous digital diversions, including social media, streaming video, text messaging, music downloads and online chatrooms, among others
— source news.usc.edu