Oh man, the title of this just grabbed my attention like a random nudist running at full speed through my cubicle-crammed work place; interesting, but unexpected to the point where I damn near fell out of my chair!
If it seriously made you lose weight, you must have either a.) forgotten to eat or b.) been eating small portions of food whilst gaming. Unless you have some kind of wasting illness or a colony of tape worms, which I would recommend getting examined...