Too much screen time can mess with teens' sleep, and that might be a major reason why depression is on the rise, especially ...

It is no secret that use of smartphones and computers by teens at night is taking away time they could be sleeping. Devices suppress melatonin, making it harder to go to sleep.

Research suggests that how often people check social media − and how emotionally engaged they are with it − can influence sleep even more than how much time they spend online.