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Nutrition Glossary


Updated January 28, 2014

digestive system Mittermeier/Getty Images

Definition: Specialized substances that act as a catalysts to regulate the speed of chemical reactions involved in the metabolism of living organisms.

In nutrition, enzymes are substances that break down carbohydrates, proteins and fats for digestion and absorption.

Digestive enzymes include lipase, which breaks down fats; amylase, which down sugars and carbohydrates: and protease, which breaks down proteins.

More About Digestive Enzymes

Back to the Nutrition Glossary


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