Fat digestion begins in the mouth, where enzymes in saliva start breaking down fats. However, the primary digestion occurs in the stomach and small intestine. In the stomach, gastric juices emulsify fats, making them easier to digest. Once the partially digested fats reach the small intestine, they encounter bile produced by the liver. Bile helps further emulsify fats, allowing pancreatic enzymes to break them down into fatty acids and glycerol. These smaller molecules are then absorbed through the intestinal walls into the bloodstream, where they can be used for energy or stored for later use.