[Shower Thought] Could obesity be responsible for triggering anorexia in some people? What I am saying is that it's possible that seeing so many fat people is breaking some people's minds and causing them to restrict their food intake in response to the trauma. One common theme among anorexics is an obsessive fear of being fat.  It follows then that anorexia and the pressure around it in the general population might be an extreme psychological response triggered by the prevalence of obese people.  It could be the result of an adaption that evolved in some humans as a response to times of overabundance, since survival would depend more on one's ability to move quickly, and being overweight negatively affects that ability.  This would cause people to seek slimmer mates and restrict their intake of food.  If this adaptation is taken to an extreme, we could get anorexia. I'm saying that it's very possible that fat people are triggering eating disorders. I don't have any data to back this up.  It's just a wild idea I had.  It may be total nonsense, but it may also have some weight to it.