Jake at NG writes:
"Research presented today at SLEEP 2009, the 23rd Annual Meeting of the Associated Professional Sleep Societies, suggests that it might be. Amanda Woolems of the University of Arkansas found that "excessive" gamers sleep less than casual gamers. There was also a link between hours played and sleepiness and gamers who reported that gaming interfered with their sleep slept 1.6 hours a night less than others. Those claiming to be addicted to gaming also slept one hour less on weekdays."