A scientific study published in the February 2010 issue of, The Spine Journal, from the North American Spine Society offered future evidence of how chiropractic helps headaches. The study was conducted at Western States Chiropractic College by the Dean of Research, Dr. Mitchell Haas, who is also a faculty member of that institution.
In simplest terms, a subluxation (a.k.a. Vertebral Subluxation) is when one or more of the bones of your spine (vertebrae) move out of position and create pressure on, or irritate spinal nerves. Spinal nerves are the nerves that come out from between each of the bones in your spine. This pressure or irritation on the nerves then causes those nerves to malfunction and interfere with the signals traveling over those nerves.