Fiber is an essential nutrient that offers numerous health benefits, from regulating blood sugar levels to reducing cholesterol and promoting digestive health. There are two main types of fiber: soluble and insoluble. Soluble fiber dissolves in water to form a gel-like substance, while insoluble fiber adds bulk to the stool and helps food move through the digestive system more quickly. Both types of fiber are important for overall health, but they have different benefits and can be found in different foods.