This document discusses fiber, including the two types - soluble and insoluble. Soluble fiber is partially digested and helps slow digestion, reduce cholesterol and regulate blood sugar. Insoluble fiber is not digested and helps food move through the digestive tract. Good sources of soluble fiber include oats, beans and citrus fruits, while insoluble fiber sources include whole grains, vegetables and fruits. The document recommends getting 25-38 grams of fiber per day from whole grains, fruits and vegetables according to the MyPlate guidelines.