This lesson introduces complementary and alternative medicine (CAM) practices. It defines CAM as non-mainstream health practices used together with or instead of conventional Western medicine. Common CAM categories discussed are natural products and mind-body practices like meditation, yoga, and Reiki. The lesson highlights that over 30% of U.S. adults and 12% of children use CAM for issues like musculoskeletal pain, colds, and cancer treatment. People seek CAM for potential health benefits and comfort in addition to mainstream medical therapies.