Your mother was right.
Arcade machines in the past had warning Real Gamers Don't Do Drugs!, but now with gaming consoles in our homes, the new warning should be playing games like Call of Duty will fry your brain like eggs in the frying pan (if remember the don't do drugs commercials)
So what do you think has playing CoD all your life as you were growing up, killed all your brain cells? - Oh'well, I guess its back to doing drugs instead then!
NEWS SOURCE: Playing Call of Duty will shrink your brain, Canadian study finds (via) CanTechLetter