National Center for Complementary and Integrative Health (NCCIH)The National Center for Complementary and Integrative Health (NCCIH) -- formerly The National Center for Complementary and Alternative Medicine (NCCAM) and the Office of Alternative Medicine (OAM) -- is a United States government agency, under the auspices of the National Institutes for Health (NIH), dedicated to exploring complementary, alternative and integrative healing practices.
EXCELLENT site for background reports and overviews on various health practices