"We're dealing with something that is pretty close to miraculous," says Dr. Lawrence Brandt of New York's Montefiore Medical Center, who has performed over 200 fecal transplants.
FDA grapples with oversight of fecal transplants →
"FDA and some others are concerned about the long-term effects," Brandt said. "But my point was these people are getting ready to die now. They are not going to survive long enough to develop the diseases you're afraid they're going to get."