The thought of transplanting another person’s poop into your colon may sound unpleasant, and understandably so. Feces are a smelly mixture of water, undigested food, dead and living bacteria, and other cells and substances. However, the live bacteria in feces have proven their worth in treating diseases and ailments of the digestive tract. This is why doctors have been transferring feces from healthy donors to sick patients for years—usually by colonoscopy, enema, or pill—to restore gut health.
The concept is relatively simple: Good bacteria from donated feces will colonize the patient’s gut if the recipient’s microbiome is out of balance and will outcompete any trouble-causing bacteria. For example, healthy fecal
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