What is the main purpose of bile in digestion?

The main purpose of bile in digestion is to emulsify fats. Bile is produced by the liver and stored in the gallbladder until it is needed for digestion. When fat enters the small intestine, bile is released and acts to break down large fat globules into smaller droplets, a process known as emulsification. This increases the surface area of fats, making it easier for digestive enzymes, such as lipase, to access and break down the fat molecules into fatty acids and glycerol for absorption by the intestinal lining. Without bile, the digestion and absorption of fats would be significantly impaired, leading to nutritional deficiencies and difficulties in digesting fatty foods.