Why does starch have to be digested before it can go into the bloodstream?

Starch is a polysaccharide that is made up of glucose units. In order for the body to use starch, it must first be broken down into glucose molecules. This process is called digestion.

The digestion of starch begins in the mouth, where salivary amylase breaks down the starch into smaller molecules. The amylase continues to work in the stomach until the starch is completely broken down into glucose molecules.

The glucose molecules are then absorbed into the bloodstream through the small intestine. Once in the bloodstream, the glucose molecules can be used for energy or stored for later use.

If starch is not digested before it enters the bloodstream, it can cause a number of problems, including:

* An upset stomach. Undigested starch can cause bloating, gas, and diarrhea.

* Malnutrition. Undigested starch can prevent the body from absorbing the nutrients that it needs.

* Weight gain. Undigested starch can be converted into fat, which can lead to weight gain.

For these reasons, it is important to make sure that starch is properly digested before it enters the bloodstream.