A biologic therapy that famous athletes swear by to treat arthritis and sports injuries -- also shows benefit for the kind of neurological pain caused by chemotherapy or diabetes. In a study using rodents, Duke Health researchers found that a spinal injection of the conditioned serum eased limb pain for far longer that typical treatment. Dr. Thomas Buchheit, associate professor of Duke University's Department of Anesthesiology, joined Nate Saunders on Tuesday.