Most of the time it is habit, greed, boredom eating, emotional eating, convenience, laziness, disability, etc.
Only a small % of obese people do have Binge Eating Disorder. BED is not the same as the above, but it's almost akin to Bulimia without the purging.
It's an incredibly distressful disorder (as all ED are), it's not just about being fixated on food at all, especially if you're just thinking about it while dieting (pretty normal for anyone). It essentially, like all ED, ruins your life beyond belief.
Being simply obese & thinking about food (whether dieting or not) itself is not an ED. You can get support from your doctor if you need it, too.
