Programs that offer health care and treatment procedures that fall outside the mainstream of conventional medical practice. Most alternative approaches provide preventive care in addition to treatment of established conditions, define health as more than just the absence of disease, focus on natural healing as the treatment of choice, avoid invasive procedures to the extent possible, and approach individuals holistically dealing with their mental, emotional and spiritual needs in addition to the physical body. Many have their origins in the medical systems of non-Western cultures or in ancient healing traditions. Some alternative therapies are used instead of traditional Western "biomedical" procedures; others are complementary, used in addition to conventional care.