Unfortunately, every medical "support group" I have ever belonged to bent over so far backwards to not "blame the victim" that you absolutely couldn't talk about what worked because, inevitably, the sickest people with the worst war stories were the same ones who smoked, actively dismissed the idea that replacing carpeting with wood and tile floors might make a difference, etc. No, it absolutely wasn't socially acceptable to suggest that there was some correlation between the folks being proactive and having positive outcomes and the people shit-talking such approaches and their horrendous prognoses.

It creates an atmosphere where we can't realistically even try to investigate or develop a mental model for what actually works. So we just pretend that success or failure is some random number generator outcome. That always has me wanting to pointedly ask "So, why go to a doctor at all if it is basically totally random?" But I know how well that will go over, so I usually bite my tongue.