1.   Cellulose and lignin are insoluble fibers.

2.   Good sources of insoluble fiber include apples, bran, beans, spinach and dried raisins and prunes.

3.   Insoluble fiber absorbs water, which increases the speed at which waste passes through the body.

4.   Insoluble fibers act as natural laxatives and are thought to be important in preventing some intestinal ailments, including colon cancer.

5.   Insoluble fiber, if it is there, is the sediment, what eventually falls to the bottom of the glass.

6.   Insoluble fibers are found in wheat bran, whole grains and vegetables.

7.   Insoluble fibers, like lignin, that form the structure of plants are well-established stimulants of the gut.

8.   Insoluble fibers are found in whole grains, dried beans and peas, and most fruits and vegetables, especially those eaten with their skins.

9.   Rather, the men, as do most Americans, mainly consumed insoluble fiber.

10.   The soluble fiber soaks up oils and impurities and the insoluble fiber helps exfoliate.