Americans

James T. Mulder writes for The Post-Standard, Healthy Central New York. He tells us that about four of every 10 U.S. adults use some type of complementary or alternative medicine, even though many of these therapies are unproven.

Complementary and alternative medicine - CAM - covers many different practices and products that fall into four main categories:

1) Alternative medical systems such as homeopathic medicine, naturopathic medicine and traditional Chinese medicine.

2) Mind-body interventions such as meditation, prayer, biofeedback and hypnosis.