What is a substance that helps in the chemical digestion of food?

The substance that helps in the chemical digestion of food is called enzymes. Enzymes are specialized proteins that catalyze, or speed up, chemical reactions in the body. Different enzymes are produced in different parts of the digestive system and are responsible for breaking down specific types of food molecules, such as carbohydrates, proteins, and fats. Without enzymes, digestion would be much slower and less efficient.