Poop fact #1: Of the 25% that's solid, the biggest component is bacteria, with the rest being a mix of indigestible food matter, fat, inorganic substances, and protein. Your poop is (usually) brown because of the way bacteria work on bilirubin, a pigment in bile that's the end result of dead red blood cells
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u/AV3NG3D May 30 '17
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