Is it true that the large intestine has digestive functions but no absorptive functions?

The large intestine has virtually no digestive function, but it does possess certain absorptive capabilities. Its main roles are protecting the mucosa and lubricating feces.

The large intestine is an important component of the digestive system. By the time food reaches the large intestine from the small intestine, most digestion and absorption have already been completed during its prolonged passage through the small intestine. Therefore, the large intestine plays almost no role in digestion. When food residue enters the large intestine, most starches, proteins, and fats have already been absorbed by the small intestine, leaving only excess water, inorganic salts, and other substances to be absorbed by the large intestine. The presence of food residue helps protect the intestinal mucosa, preventing bacterial infection. Bacteria within the large intestine break down the food residue, which then combines with mucus to form feces that are eventually expelled from the body.

It's important to take care of the large intestine, as a healthy large intestine enables the elimination of most toxins from the body via feces. Including foods rich in dietary fiber in the daily diet not only promotes the excretion of metabolic waste but also helps prevent constipation, thus benefiting overall colon health.