Definition: a diet high in the nondigestible part of plants, which is fiber. Fiber is found in fruits, vegetables, whole grains, and legumes. Insoluble fiber increases stool bulk, decreases transit time of food in the bowel, and decreases constipation and the risk of colon cancer. Soluble fiber delays absorption of glucose, which helps to control blood sugar in diabetes mellitus, and delays absorption of lipids, which helps to control hyperlipidemia. Recommended in treatment of diverticular disease of the colon.
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