I just read this a little while ago on Yahoo! and thought to share it.
The family of a budding computer programmer have on Saturday launched a campaign to raise awareness about the health risks of playing online computer games after their son died following a marathon session on his Xbox.
A post-mortem revealed that 20-year-old Chris Staniforth -- who was offered a place to study Game Design at Leicester University -- was killed by a pulmonary embolism, which can occur if someone sits in the same position for several hours. Deep vein thrombosis normally affects passengers on long-haul flights, but medical experts fear youngsters who spend hours glued to their consoles might also be at risk and have urged them to take regular breaks.
What I don't like about these sort of articles (aside from the whole death part) is that when people read the title, they instantly blame gaming as a whole. It's not the game's fault, it's our own negligence that brings about these kinds of tragedies. So remember guys, take care of yourselves, take regular breaks after every hour or so, and happy gaming.