(NIH, 1997): “Many studies in animals and humans have demonstrated that acupuncture can cause multiple biological responses. These responses can occur locally, i.e., at or close to the site of application, or at a distance, mediated mainly by sensory neurons to many structures within the central nervous system…
Chronic Low Back Pain (Witt, 2006): Largest study to date demonstrates acupunctures effectiveness and cost-effectiveness in the treatment of chronic low back pain based on functionality, pain and quality of life assessed directly after, 3 months after, and 6 months after treatment. 11,630 patient…
References indicated in all the above sections can be found here.