Moistening saliva fed into the mouth from nearby glands starts the process of chemical digestion using specialized proteins called enzymes. Secreted at various points along the digestive tract ...

VOICEOVER: Enzymes of the digestive system. Three key types of enzymes in different parts of our digestive system help break down the food to provide the energy our body needs to grow and repair.

At times, that’s in the form of digestive enzyme supplements — but whether people should take them and how well they work depends on how you’re getting the products, your health status and more.