Concerning 1, I personally believe that on the flip side, having an intimate knowledge about food is beneficial to health. Being able to have at least some awareness of what you put into your body allow you to be aware of what constitutes a sensible portion, and being able to appreciate various nuances of food beyond fat, salt, and sugar will generally result in healthier eating.

Extended destructive binges are usually a symptom of some other emotional stress, and I presume that regular eating habits aren't going to be followed, anyway.