Resident fatfag here. It's mostly portion sizes; some big people I know are eating all the time, my thing is just giant plates. Used to think there's no way I'd ever hit 300, wasn't worried about it. Then it just sort of happened. Could never enact anything to do about it, pretty sure it's some sort of addiction mixed with undiagnosed ADHD. The giant servings are the only way I can convince my brain to shut up about food for a while. Heading towards 400 now. I know it's an issue, I know I'm gross, I think I'm trying to kill myself but I'm too cowardly to use a bullet. Sorry to blog, just figured it might give some insight.