Quackery permeates every field from mild headache to cancer, but it's easier for people to fall for it (and for quacks to make a quick buck) in fields where science has yet to give us a good picture. I hope the situation will improve as research continues and we learn more concrete facts about autism.
Or people to be skeptical because science has yet to give us a good answer, although a lot of the time the leading edge of medicine and science and skepticism is more about education and knowledge permeating society. Stem cells have been in use since 1991 on race horses to heal them - big money in race horses which is why it was tried there - however it's only just starting to become mainstream for people. That's 26 years for the science and knowledge base to develop and reach people - doctors and otherwise.
