Deep in the bowels of our, well, bowels, lurk trillions of microscopic bacteria. But don't be fooled by the big bad "B" word, intractably tied to infections and disease. In fact, these bitty bugs do us a world of good.
"There's a certain 'ick' factor associated with gut bacteria," said Lita Proctor, director of the Human Microbiome Project, a National Institutes of Health initiative to characterize the bugs that colonize our every crevice – outside and in. "People tend to think of them as germs and disease-causing pathogens, but they're actually part of our bodies."
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