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--polysaccharide that can not be digested by human enzymes
--digested by bacteria
--adds bulk to feces
--comes from plants
types of insoluble fiber
--cellulose (Celery, wheat)
--lignin (non carb, root veggies, wheat bran)
types of soluble fiber
--pectins (apples, citris)
physiological effects of soluble fiber
--delays stomach emptying
--slows glucose absorption
--can lower blood cholesterol
beneficial effects of fiber
--promotes feeling of fullness
--prevents constipation, hemorrhoids
--reduces blood cholesterol levels
--bile binds to it and is excreted
--slow digestion and absorption of carbs
--reduces risk of colon cancer
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