Chiropractic: Chiropractic is a word derived from two ancient Greek words meaning "done by hand". It was established in the late 1800's by Canadian healer Daniel David Palmer, who claimed that the spine is the center of the body. Palmer felt that when the spine is out of alignment, the body is unable to function at its optimal level. Chiropractic treatment involves identifying where spinal misalignments are located and on realigning the spine.
The World Federation of Chiropractic defines chiropractic as "A health profession concerned with the diagnosis, treatment and prevention of mechanical disorders of the musculoskeletal system, and the effects of these disorders on the function of the nervous system and general health. There is an emphasis on manual treatments including spinal manipulation or adjustment."
Chiropractic's focus on the relationship between bodily structure and function. Chiropractors use manipulative therapy as treatment too for ailments a patient may be having. Chiropractic practitioners go by the theory that health and disease are life processes related to the function of the nervous system. For example irritation of the nervous system by mechanical, chemical, or psychic factors is the cause of disease; restoration and maintenance of health depend on normal function of the nervous system.