Chiropractic has been in existence since 1895 when DD Palmer gave the first spinal adjustment. The science of chiropractic deals with too much or too little nerve transmission from the spine and other articulations of the body; but does not include drugs or surgery. Nerves control the body's functions, not only muscles and internal organs, but the trophic function of the body (keeping muscles and organs from deteriorating). Nerves also maintain organs that produce hormones (which are chemical nerves). Thus, nerve structure is very important in keeping the body in good condition.
Chiropractic has continued as an alternative health profession since that time due to the fact that it works very well, too. Chiropractors were once upon a time primary care doctors in small towns and even in medium cities due to the fact that there were no medical personnel available and at that time patients took better of their bodies particularly by eating more nutritious foods since 70% of all Americans lived on a farm.