I thought someone had posted this article here somewhere already, but I don't see it, so here it is. It's the Wall Street Journal which sometimes puts things behind a pay wall after a couple of days, so the link is to a summary blog post with a link to the article in it. It's basically about how that chocolate cupcake or leftover pizza in the fridge (or even a picture of it in a magazine!) can "call" to you even when you're not actually hungry. Eating to Live or Living to Eat? (WSJ Health section, July 13, 2010)
Brain of obese people reacts differently to high calorie foods
Direct link to the WSJ: Eating to Live or Living to Eat?
My (lifetime skinny) mom was reading the article the other morning and said, "Wow, I'm glad I'm not like that." So it might be handy to show to some of your significant others who don't understand about leaving their junkfood around.