By Roxanne Palmer

A dangerous gut disorder is on the rise, and a handful of doctors say that we might be flushing the most effective treatment down the toilet. The procedure they advocate involves transplanting a healthy person’s feces into a sick person’s colon. Although the approach has shown some promising results, critics worry about unintended consequences—not to mention the ‘yuck’ factor for patients. Roxanne Palmer reports.

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Image: Jutta Kuss