What does the small intestine do?

The small intestine is a very important part of the digestive system of the human body. The main nutrients of the human body are absorbed by the small intestine. Food can be decomposed into components that can be absorbed by people in the small intestine. Most of the sugar powder, protein and fat in the human body are digested and absorbed in the small intestine. The small intestine can discharge the absorbed food residue into the large intestine. Pay attention to prevent eating irritating foods frequently in order to prevent small intestine diseases.