According To The United States Government…
“Chiropractors, also known as doctors of chiropractic or chiropractic physicians, diagnose and treat patients whose health problems are associated with the body’s muscular, nervous, and skeletal systems, especially the spine. Chiropractors believe that interference with these systems impairs the body’s normal functions and lowers its resistance to disease. They also hold that spinal or vertebral dysfunction alters many important body functions by affecting the nervous system and that skeletal imbalance through joint or articular dysfunction, especially in the spine, can cause pain.”
United States Department of Labor Bureau of Labor Statistics, 2008