How Does the Digestive System Work?
Think of your gastrointestinal tract as a long, muscular tube. This tube starts at your mouth and ends at your anus, and, if you were to stretch it out to its full length, would...
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The Ecosystem in the Digestive Tract
Inside the digestive tube is a vast ecosystem where some 100 trillion bacteria live. But this should not alarm you. We have been conditioned to think of bacteria as something bad, and the thought...
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