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Digestion and absorption of many carbs, especially simple carbs start in your mouth and typically end in your stomach.

Some more complex carbs are digested in small intestines. Almost all fats and proteins are digested and absorbed in the small intestine. In fact, the majority of absorption and digestion happens here.

Typically very minimal is absorbed and digested in the large intestine. The one thing the large intestine does really well is to absorb water. This is why your stool is exceptionally watery when you have diarrhea as it has passed through the large intestine much too quickly to absorb the appropriate amount of water.

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12y ago

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