How alternative is alternative medicine these days?

With U.S. expenditure approaching $40 billion a year, and at least 40 percent of general practices in the U.K. providing some complementary medicine services, it seems that what was once sidelined and even scorned by doctors is now part of the mainstream.

At the end of January the U.K.'s Royal College of Physicians and the U.S.'s National Center for Complementary and Alternative Medicine met in London to discuss how complementary and alternative medicine can best be integrated into conventional patient care.