The document discusses dietary fiber and water. It provides information on the functions and sources of dietary fiber, including that it is found exclusively in plants and helps prevent constipation. Sources of fiber include whole grains, fruits, vegetables, beans and lentils. The recommended daily intake of fiber for adults is 18g. The document also discusses the functions and sources of water in the body, and that the recommended daily intake of fluids is 6-8 glasses to prevent dehydration.