I sometimes wonder if Corissa is really so retarded that she actually believes that fat is only deadly because we haven't accepted it in society yet. She doesn't really think that the stress of not being seen as attractive is what drives her health problems does she? If so, I bet there's fat marbling in her brain because that is grade A stupid.
Doctors have many, many euphemisms and acronyms they can put in the file of someone like her. Nice, professional ways of noting: this person is hostile and combative, will not listen to medical advice or follow instruction, is an unreliable reporter, shows signs of things like bpd/npd, is pathologically self-destructive, has a strong persecution complex, prefers their own diagnosis and will not accept outside medical advice, refuses to confront the root cause of her medical issues and will lash out if mentioned, needs to be handled as a mentally ill case of harm reduction, etc.
Corissa's logic is that doctors who think the above are literally killing her. She translates the above to: "I am an evil white supremacist (somehow) shitlord doctor who hates fat people and wants them all to die. When my patient complains that her knees are crumbling like chalk and she keeps burping up battery acid, I'll totally ignore any other possible cause and only suggest weight loss, even though there's definitely secretly some other reason her body is disintegrating. Because I hate her and I'm obsessed with hating fat people (evil laugh)"
So when Corissa has grinding joints, orange peel skin, wonky periods, or, say, can't walk through a goddamn airport, and a doctor says "yeah, we can look into (whatever treatment), but you'd benefit from weight loss," she can go home and cry about how a DOCTOR did it to her. The evil, anti-fat, white supremacist (somehow) establishment put her in all that pain and misery. A stupid non-woke racist (somehow) doctor who probably should be fired and evicted and hung from a lamppost made her joints ache. Corissa dindunuffin