Much of the food you eat is absorbed by your digestive system, which includes your stomach and your intestines.

Chemical digestion is one of the six main functions of your digestive system. This system consists of your digestive or gastrointestinal tract and accessory organs. During chemical digestion, your ...

Using new technology, researchers at UC Davis and Stanford University are able to study microbes and metabolism in different parts of the human digestive system for the first time. (Getty Images) Most ...

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Stomach acid, primarily hydrochloric acid, plays a vital role in digestion by breaking down food and enabling nutrient absorption. It acts as a crucial defense against harmful microorganisms, ...