Various cells in the stomach secrete digestive enzymes and hydrochloric acid. These substances break down food so the body can absorb nutrients. The stomach is a muscular organ in the upper abdomen ...

The mouth starts the digestion process by breaking food down into a more easily digestible form. It does this through a combination of mechanical and chemical digestion. After people take food in ...

Most of us have rushed through a meal at some point: a quick breakfast before work, lunch eaten at a desk or dinner swallowed while multitasking. It feels harmless in the moment, but your stomach ...