Okay, it's a disease.
Would we allow individuals with severely fatal heart disease to run at a high level? That seems irresponsible.
Are there any other mental illnesses (bi-polar, schitzo-affective, etc) where the detriment is a fully aware and conscious set of decision-making (I'm not going to eat / I'm going to throw up, etc) that can be absolutely dormant but brought about by simple conversation?
Not sure what to make of the leukemia comment. how are you equating advances in treatment of a physical ailment to advances in knowledge of a mental ailment? Why not compare treatments for both or knowledge of both?