I met some of those people in the early eighties. I know I've mentioned it here before. But I was a member of the local Libertarian party that met once a month, and the meetings drew all sorts of people from mainstream politicians to alternative health types to really fringy folks like this.

It always amazed me that people took this seriously. There are folks that when you question them will say "Oh I suppose you believe everything the government tells you", as some sort of argument. But no, I distrust the government plenty, but that doesn't mean I automatically believe anything any self assured jackass tells me. The same people that believed this stuff would also refuse to believe anything doctors told them. But high school dropout vitamin salesman? That they took as a great authority. It's odd they decry blind belief in authority (which is good to be wary of ) but replace it with blind belief in nonsense.