What about Anorexia or Bulimia ? Just because it's not a traditional "disease" doesn't mean that it's simply a case of saying "i'm going to lose weight today" I case isn't applicable to everyone in the same way that we all crave different things in our lifestyles. Some people even experience severe pain if they go without eating for even a matter of hours due to deficiencies in the body; you can't tell me that that's an easy thing to overcome.