I saw this article on WebMd today about "Hedonic Hunger." It's quite long, but discusses eating for pleasure, and how some people may be more predisposed to partake in hedonic eating (like binge eating) due to genetics, environmental influences and a person's inhibitory response. The article doesn't go so far as to say "food addiction," but does discuss how sweet foods in particular flood the brain with dopamine, and some people may seek them out repeatedly for that "pleasure hit."
It gets a bit depressing in talking about how people who are predisposed to this have a hard time losing weight and keeping it off. The article suggests based on information from a metabolism expert at the NIH. WE all know your BMR slows when you lose weight, but your hunger hormones are "ramped up" and your satiety signals are turned down. Wow. I had not heard of this before, but I'm guessing one big reason why "slow and steady wins the race" is really true for weight loss.
There is hope, though, and it sounds like some new treatment methods are being tested for people who have a "strong hedonistic drive" to overeat.
Edited to add: I hope this doesn't discourage anyone from losing weight, as there are several of us here who have been successful. However, when we tell you that it's better to lose weight slowly, listen