Where is digested food absorbed into blood in human body?

The main place this happens is in your small intestine. It's a very long tube in your gut. The inner wall is not smooth. It is covered in millions of tiny fingers called villi. This gives it a really big surface area. It helps to absorb all the nutrients from food.

These nutrients pass through the wall of the intestine. They go straight into tiny blood vessels. Your blood then carries all this good stuff around the body for energy. Your large intestine mostly absorbs water after this part is done.