Recent research found a “sweet spot” in the number of chiropractic treatments to correct chronic low back pain. A meticulous randomized trial to isolate the effects of “spinal manipulative therapy” found that patients who received twelve chiropractic treatments within a six-week period fared better than those who saw the chiropractor only six times, and even those who were treated eighteen times. This is the first study of its kind that attempts to find the optimum dose-response of chiropractic adjustments for a given condition and provides a scientific basis for the prescription of chiropractic care.