Oakland, Calif., gastroenterologist Dr. Neil Stollman has seen a 100% cure rate using fecal transplant procedures to treat Clostridium difficile infection, and he says the therapy has the potential to help thousands of people. Demand for the procedure far outpaces the supply of doctors who perform it, but fecal transplants are new to Western medicine, and federal regulations remain a question while billing protocols have yet to be established. That unmet demand has raised concerns about do-it-yourself treatments, scams involving untested promises and a fecal transplant black market.

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