I've heard that high-fiber foods will keep me "regular."  Is that true?  What kinds of foods are high fiber?  And will they protect me against colon cancer?
D003110:Colonic Neoplasms / Q000503:physiopathology / Q000517:prevention & control*; D004043:Dietary Fiber; D005769:Gastrointestinal Motility; D006801:Humans