Theres thousands of studies on this kind of thing, and you could find one to support any belief. Here's a list of studies with several different findings: http://www.telegraph.co.uk/men/thinking-man/is-video-gaming-... Here's another, with some contradictory findings: https://www.npr.org/sections/health-shots/2014/08/08/3388554... One interesting study in that second set actually said that a small amount of gaming per day, less than an hour, was beneficial -- better than not at all.