Chiropractors are medical professionals who diagnose and treat disorders of the musculoskeletal and nervous systems. They use traditional diagnostic testing methods (such as x-rays, MRI, and lab work) along with specific chiropractic techniques that involve hands-on adjustment of the articulations (joints) of the body. Chiropractors also offer nutrition and healthy lifestyle counseling. Chiropractors elect not to prescribe medications, and they do not perform surgery; however, many chiropractors work closely with medical doctors and will refer a patient when necessary.