I'm obese. I've been hovering around 200 for the past few years and will probably stay there for a good while.
The odd thing is that I'm living on less than what many skinny people eat. I think I'm just very efficient at using the food I eat... I think at the moment I'm eating about 1500-1800 calories per day, and most people my size would need a little over 2000. By all accounts, I should be losing weight. Not so much. I've been losing over the past year, but I think I lost only about five pounds total. I can't remember the scale ever saying anything more than about 208, which was sometime last year.
It can come in handy, though, because like many Aspies, I can get involved in things and forget to eat until I'm starting to get faint and realize I haven't eaten all day; or I can go on a walk and keep going until my feet hurt too much, because I've got a lot of endurance and the motion is soothing. I think if I were a little skinny person, either of those things wouldn't happen. I'd need to stop and eat much earlier. Could be that my body's storing up energy just because it knows I do stuff like that to it.
That style of eating--1500 calories all at once, then almost nothing the rest of the day, which is how it is when it's at its most disordered--is probably not very good for you. That's a problem of organization, though, not some kind of a food issue. If I could have three meals that were properly balanced and had enough nutrients in them, I'd go for it in a second. But I'm having enough trouble keeping any kind of a consistent schedule that my brain regularly thinks it's 3 a.m. when it's actually noon, and vice versa; when I drink coffee to wake up, at 3 in the afternoon; when I realize it's time to go to school about halfway through my first class... I have no organizational abilities, apparently. And that extends to food. Most likely, that's part of why I'm fat--the body wants to gain some sort of balance, and carrying extra energy around its hips is part of how mine has apparently adjusted.