Today’s chiropractor is well trained. The science of chiropractic requires a special emphasis on anatomy, physiology, pathology, neurology, biomechanics and x-rays, spinal adjustments and related topics. This demanding curriculum prepares the chiropractor to locate and correct the intervertebral disc subluxation complex and to help correct nervous system dysfunction. In order to graduate with a degree in chiropractic, each candidate must pass the demanding National Board Examination. After that, a chiropractor can sign up with a government or professional licensing agency and pass an even more difficult test. Only then does the chiropractor have the privilege to practice his practice. The training of a chiropractor never ends. Chiropractors take postgraduate courses to renew licenses and keep up to date with the latest scientific research. After undergraduate studies, a chiropractor has taken an additional four-year curriculum of more than 4,500 college hours in health sciences today.