 Some of the most popular alternative cancer treatments were found to be dietary therapies, antioxidants, high dose vitamins, and herbal therapies.Use of unconventional cancer treatments in the United States has been influenced by the U.S. federal government's National Center for Complementary and Alternative Medicine (NCCAM), initially known as the Office of Alternative Medicine (OAM), which was established in 1992 as a National Institutes of Health (NIH) adjunct by the U.S. Congress.More specifically, the NIC's Office of Cancer Complementary and Alternative Medicine sponsors over $105 million a year in grants for pseudoscientific cancer research.