On today's Please Explain we’ll look into chiropractic, used to treat back pain with spinal manipulation and adjustment. We’ll also discuss why it’s controversial, and new research into how it works and how it could be used to treat TMJ, headaches, even high blood pressure. We’re joined by Christine Goertz, D.C., Ph.D, Vice Chancellor for Research and Health Policy at Palmer College of Chiropractic in Davenport, Iowa, and James N. Dillard, M.D., D.C., C.Ac., former assistant clinical professor at Columbia University College of Physicians and Surgeons, and former Medical Director of Columbia's Rosenthal Center for Complementary and Alternative Medicine, and author of The Chronic Pain Solution.