According to the Associated Press, numerous alternative medical cures have now been tested by the U.S. government, at great cost, and almost none of them show any promise at all in controlled studies sponsored by the National Center for Complementary and Alternative Medicine:

Ten years ago the government set out to test herbal and other alternative health remedies to find the ones that work. After spending $2.5 billion, the disappointing answer seems to be that almost none of them do.