How It Works
Chiropractic theory has based itself on “subluxations,” or vertebrae that have shifted position in the spine. These subluxations are said to affect nerve outflow and cause disease in various organs. A chiropractic treatment is done to "put back in" these "popped out" vertebrae. For this reason, it is called an “adjustment.”
However, no real evidence has ever been presented showing that a given chiropractic treatment alters the position of any vertebrae. In addition, there is no real evidence that impairment of nerve outflow is a major contributor to common illnesses, or that spinal manipulation changes nerve outflow in such a way as to affect organ function.
Other theories suggest that chiropractic manipulation may relieve pain by “loosening” vertebrae that have become immobile rather than by changing their position. In addition, the sudden movements of manipulation may alter the response patterns of nerves in the spine, again relieving pain.