Chiropractic is the largest natural health care profession in North America. Chiropractors are primary health care providers and portals of entry into the health care system. Traditionally, chiropractic was based on the relationship of the normal and abnormal alignment of the spine to health and disease. But many modern chiropractors are concerned with restoring all aspects of function, including neurological function, nutritional status, acupuncture meridian system function, and other aspects of function as the need arises. Chiropractors have learned that spinal health is closely related to the functions of the body’s muscles, organs, acupuncture circuits, and to nutrition, diet, exercise, and emotional health. Therefore, some chiropractors consider all of these factors and more in approaching a patient’s problems. Many chiropractors now practice chiropractic as a naturally oriented, holistic system of health care, concerned with both the treatment of health problems and with the enhancement and preservation of wellness.