Dodgy Science, Poor Access and High Prices: The Parallel Medical World of Medicinal Marijuana in America Politico - February 27, 2023 Julia Arnsten, M.D., M.P.H., discusses the challenges some patients with chronic pain and other conditions face in obtaining medical cannabis. Dr. Arnsten is professor of medicine, of psychiatry & behavioral sciences, and of epidemiology & population health at Einstein and chief of the division of general internal medicine at Einstein and Montefiore.