Ever since late June, I've been intermittently taking note of a new conspiracy theory in the alternative medicine world. It began when notorious autism quack Jeff Bradstreet, one of the longest practicing, most prominent purveyors of the scientifically discredited notion that vaccines cause autism, was found dead in a North Carolina river on June 19. The police rapidly concluded that he had died of a self-inflicted gunshot wound to the chest. It was impossible not to note that the FDA had raided his clinic a few days before, and it later came out that it was due to his use of and unproven…