There's definitely a crackpot subgenre of selling people on expensive chelation that they don't need. The idea of "cleansing" and "detoxing" supplements (which

There's definitely a crackpot subgenre of selling people on expensive chelation that they don't need. The idea of "cleansing" and "detoxing" supplements (which don't really do anything much but maybe make you poop) has bloomed into selling people chelation (which does do stuff, but only if you are poisoned by heavy metals). It's not antivaxx, but it's antivaxx-adjacent, and awful stories like this is what people think of when someone promotes chelation against the medical consensus. https://www.medpagetoday.com/neurology/autism/1616 https://www.medpagetoday.com/neurology/autism/1616 That doesn't prove anything about any particular use of it, but that's why people can get very angry when it comes up.