Learn what digestive enzymes are, how they help break down food and absorb nutrients, and who needs them. Find out about natural sources of enzymes , replacement medications, and potential side effects. Digestive enzymes are specialized proteins that catalyze the chemical breakdown of food into smaller, absorbable molecules. These enzymes are essential for nutrient absorption and energy production, playing a central role in the digestive systems of animals and some plants. In humans, they are secreted by glands and organs along the gastrointestinal (GI) tract, including the salivary glands, stomach, pancreas, and small intestine. Each enzyme acts on a specific substrate, such as proteins ... Explore the various types of digestive enzymes that break down food into absorbable nutrients, including amylase, lipase, protease, and more. Digestive enzymes convert the food into smaller molecules that your tissues, cells, and organs utilize for many metabolic functions. It takes some time to complete this process and results in amino acids, glycerol, fatty acids and simple sugars.