How much time on mobile phones and online is bad for your mental health?

Last night, my wife and I placed an Internet time-limit app on my 12-year-old son's iPhone. It seemed long overdue, but he threw the kind of stink I would have expected if we gave away our puppy.

We wanted to save his brain from technology and, of course, we had some safety reasons as well. In January 2013, a California girl made headlines for drugging her parents' milkshakes with sleeping pills in order to use the Internet past her curfew. Perhaps coincidentally and not a minute too soon, that same year the American Psychological Association began recognizing Internet addiction as a disorder. The Internet, it seems, isn't safe for children or parents.