Are lipids digested in the stomach?

Lipids are not digested in the stomach, making the assertion that they are completely undigested accurate. The primary roles of the stomach include mechanical digestion and mixing food with gastric juices, which mainly break down proteins and kill bacteria. While some initial processes may help emulsify fats, significant lipid digestion is not initiated until they reach the small intestine, where bile acids and pancreatic lipases play crucial roles in breaking down fats into fatty acids and glycerol. This process highlights the importance of the small intestine and other digestive enzymes in lipid metabolism, underscoring that the stomach does not contribute substantially to lipid digestion.