I have heard about the physical possibilities of not only cell phones, also magnetic fields as I was a lineman. Seems we cannot get a straight answer on the actual effects, at least no one with any real authority wants to say yes or no. However, one thing mentioned in this video seems to be insanely obvious. That is phones and pc time is has obviously nothing to do with "real " socialization. On the contrary, it is the exact opposite. While using them minimally can be great, people who sit mostly behind their phones and computers really have no meaningful relationships. You have to get out and actually "be" with people. Kinda like people who say I have X number of friends on Facebook or what ever one they are using. Really? This site is the only one I spend any time on. I don't belong to Facebook, twitter or anything else. It's not that I don't know of them, I purposely avoid them. And no, no foil hat here. Just don't feel the need to live my life on these type of things. I do enjoy my screen time here though.