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How long does food usually remain in the stomach?

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Diagram of the human digestive system viewed from the front, showing and labeling organs including the mouth, teeth, tongue, salivary glands, pharynx, esophagus, liver, stomach, gallbladder, pancreas, large intestine, small intestine, appendix, rectum, and anus. — digestion The human digestive system as seen from the front.

In the context of digestion, food typically remains in the stomach for an average of 2 to 4 hours.1

During this time, the stomach mixes food with gastric juices to create a semiliquid substance called chyme. The specific rate at which the stomach empties depends on the physical and chemical composition of the meal. Generally, fluids empty more rapidly than solids, and the rate of emptying for macronutrients follows this order: carbohydrates empty most rapidly, followed by proteins, with fats emptying the slowest. Factors such as the size of food particles and the acidity of the contents also influence when the pylorus allows the chyme to pass into the small intestine.12