I was thinking that one of the most interesting points in this discussion is how not only obese people have a difficult relationship with food. Normal-weight people can be obsessed with food too, and I don't mean this in a judgemental way, just that for some people more than others it is necessary to pay extreme attention to what they eat and how they eat, to maintain a healthy weight. Obesity just makes it more visible to others.

It's not that I'm incapable of binging, and I do need to keep up certain good habits to eat well over time, but once I have those habits I do "just... eat". If I eat something out of the norm like a very rich restaurant meal it usually affects my appetite, I might feel queasy or not want to eat for a long time, it doesn't trigger a desire for a lot more of the same type of food and I don't need to actively choose to eat less the following day. But this is very closely tied to activity and exercise for me.

I wish there was a lot more research done on appetite. Hunger is a very strong feeling, and almost impossible to ignore. Now that most of us have unlimited access to food we need to know a lot more about how to balance our natural desire to eat while it's there with the more subtle signals of "enough".