More useful would be actionable advice on deprogramming cult followers, probably tied back to some psychological trauma. My SIL just died as a consequence of h

More useful would be actionable advice on deprogramming cult followers, probably tied back to some psychological trauma. My SIL just died as a consequence of her faith in alternative medicines. Magnetic blankets, some herbs, some homeopathic nonsense, faith healing, etc. More disturbing to me is that my brother went along with it. Transmuted from aspiring to be the next Jacques Cousteau to full throated fundie (young Earth, creationism, own the libtards, COVID hoax, gold bug, etc). FWIW, we were raised Lutheran. As kids, my brother held my hand during a bone marrow transplant. At some level, he knows the truth. But he and my SIL simply could not consider rational options. Not for lack of trying. Many, many people in my SIL's social circles and church tried to intervene. She simply ghosted most of them. And threatened to divorce my brother over it. Being an unwilling participant in their self-destruction (caring for my nephews), seeing them in action on their own turf, I finally realized the root cause is almost certainly unaddressed trauma. My SIL talked about chemotherapy like anorexics talk about food. And I'm fairly clear why my brother is a basket case. In conclusion, thank you for your suggestion. But ignorance isn't the problem. At least these two people who reject science are motivated by other reasons.