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Your small intestine is lined with tiny protrusions called villi that play a big role in digestion. Sebastian Kaulitzki/Science Photo Library via Getty Images

How does your body make poop?

Your food goes on a complex journey as it travels from your mouth to your colon.
Brown poop can indicate good health. Vitalii Barida/iStock via Getty Images Plus

Why is my poop brown?

The answer is more complicated than you might think. It has to do with how your body gets rid of old red blood cells.

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