First developed in 1895, today chiropractic is the largest drugless healing profession. Chiropractic is based on the scientific fact that the nerve system controls the function of every cell, tissue, organ and system in your body. The nerve system consists of the brain, spinal cord and millions of nerves. The brain is protected by the skull, and the spinal cord is protected by the 24 movable bones of the spine. Many everyday activities can cause these spinal bones to lose their normal position. This can result in nervous system dysfunction and ultimately ill health. The adjustment of the spinal column rehabilitates normal nervous system functioning and promotes the body’s natural healing capability. Chiropractors influence the body’s nervous system and natural defense mechanisms in order to alleviate pain and improve general health. Because of its effectiveness in treating back problems, headaches and other injuries and traumas, chiropractic has become the second largest primary health care field in the world.