Denver Chiropractic Center- Just Two Treatments.

Nearly 200 adults with spinal pain were separated into two groups. One group received two chiropractic adjustments and the other received two sham adjustments so researchers could differentiate if results were the result of the adjustment itself or the expectation of treatment. Two weeks later, researchers assessed each group and found the adjustment group reported greater improvements in pain, better overall improvement, and higher satisfaction.
Spine, November 2013