James N. Dillard, M.D., D.C., C.Ac., is assistant clinical professor, Columbia University College of Physicians and Surgeons, and clinical adviser to Columbia’s Rosenthal Center for Complementary and Alternative Medicine. He is also attending physician, the New York–Presbyterian Hospitals; attending physician, Beth Israel Medical Center, Department of Pain Medicine and Palliative Care and Continuum Center for Health and Healing; and director of Complementary Medicine Services, University Pain Center, Manhattan. His media appearances have included The Oprah Winfrey Show, Good Morning America, and the CBS Evening News.

Leigh Ann Hirschman is a Chicago-based writer.