According to a new nationwide government survey, 36 percent of U.S. adults aged 18 years and over use some form of complementary and alternative medicine ( CAM). CAM is defined as a group of diverse medical and health care systems, practices, and products that are not presently considered to be part of conventional medicine in the United States. When prayer specifically for health reasons is included in the definition of CAM, the number of U.S. adults using some form of CAM in the past year rises to 62 percent.

Source: NIH National Center for Complementary and Alternative Medicine