You can't be fat and anorexic because the requirement is a 17.5 BMI or lower. You can have EDNOS or Bulemia or Binge-eating and be fat because those eating disorders don't have the weight requirement. Fats, however, all want the anorexia label because "recovery" is a free pass to stuff their faces even more without anyone being allowed to say anything about them and if anyone finds them repulsive, they can whine about being "triggered". You can (absolutely do) have an unhealthy relationship with food if you're fat, but no fat wants to hear that. They want to be coddled.