We can always use more case studies of insanity that aren't religion, right?
Well, Miracle Mineral Supplement is my new go-to example for Bad Things happening to people with low epistemic standards. "MMS" is a supposed cure for everything ranging from the common cold to HIV to cancer. I just saw it recommended in another Facebook thread to someone who was worried about malaria symptoms.
It's industrial-strength bleach. Literally just bleach. Usually drunk, sometimes injected, and yes, it often kills you. It is every bit as bad as it sounds if not worse.
This is beyond Poe's Law. Medieval blood draining via leeches was far more of an excusable error than this, they had far less evidence it was a bad idea. I think if I was trying to guess what was the dumbest alternative medicine on the planet, I still would not have guessed this low. My brain is still not pessimistic enough about human stupidity.
This is discussed to some extent in Siddhartha Mukherjee's "The Emperor of All Maladies" which is an excellent book about the history of cancer. In most cases, chemo drugs are chosen because they target a specific phenomenon that is occurring in cancer cells more commonly than it is occurring in other cells. The most common example is mitosis (since the main problem with cancer cells is that they just keep growing). This is why chemo drugs often harm cell types like immune cells and hair follicles- these cells are some of the few cells in the body that are often growing.
A historical example may be instructive. One of the first attempts at chemo was for leukemia. It was known that leukemia cells had strange mitosis behavior and distorted nuclei. So researchers tried giving folic acid to the patients since this was known to be important in cell dvision. Unfortunately, this made the leukemia even more virulent: it turned out that levels of folic acid were actually a limiting factor on how fast the cancer cells could divide. So then they tried giving them chemicals that interfered with the metabolism and processing of folic acid. This was the first set of chemo drugs that had any success (although it turned out to be always temporary: the cancer almost inevitably evolved around it).
That's really interesting, thanks!