Part of the issue is in training your taste. Yes, the super high calorie foods are always going to taste good. But that does not mean that the less caloric food

Part of the issue is in training your taste. Yes, the super high calorie foods are always going to taste good. But that does not mean that the less caloric foods will not also taste just as good. My SO has a super restrictive diet (due to some pretty bad health reasons). My SO's taste has changed dramatically since being on the diet for some time. In that my SO can taste a single 'no-no' ingredient in just about any food item. I'm talking a single pepper-flake in ~4 hour roast. Things you may not think of as 'sweet', like broccoli or cabbage, are reported as near candy. It's taken a while, but the effects are real. I think that issue is a big deal with the obese: taste. Their tastes have become so desensitized that only the umami bombs of Doritos will elicit a response. Similarly with fats and sugars, only the largest signals are now received. Perhaps a way to deal with this is to just have the obese eat more, but of the 'good' stuff. To retrain their taste. Have a salad, a good one, and then eat dinner. Have an apple with breakfast, and then all the eggs and butter. Etc.