Dr. Mark Davis is a naturopathic physician recognized as one of the foremost experts on fecal microbiota therapy (FMT). Known as an effective treatment for C. difficile infection, FMT is now proving helpful for ulcerative colitis. A recent study suggested its efficacy in autism. Who are candidates for FMT? Why is it important to screen stool donors? Since it's not an officially approved treatment (except for C. diff.), how are patients obtaining it? Why are parasite carriers less susceptible to autoimmune and allergic disorders? How is "worm" therapy with helminths utilized clinically? What other natural strategies offer hope to sufferers of colitis and other digestive conditions? What role for the Specific Carbohydrate Diet? For resistant starches? Will FMT and helminth therapy ever go mainstream with targeted, commercialized prescription or over-the-counter products?