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- $Unique_ID{BRK01269}
- $Pretitle{}
- $Title{Can Fiber in a Diet Protect You From Colon Cancer?}
- $Subject{fiber colon cancer digestive system diet dietary digested stool
- constipation intestinal fecal bulk carcinogens intestine digestion nutrition
- food foods diets fibers large cancers}
- $Volume{I-26}
- $Log{}
-
- Copyright (c) 1991-92,1993 Tribune Media Services, Inc.
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- Can Fiber in a Diet Protect You From Colon Cancer?
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- QUESTION: Is it true that the fiber in a diet can protect you from colon
- cancer? That's what I keep seeing on television, but I can't figure out how
- this works. Could you please explain?
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-
- ANSWER: Dietary fiber, found only in plants like vegetables, fruits and
- grains, cannot be digested by humans. Some forms of fiber (particularly the
- type in wheat bran) can absorb water in the gut, which softens and increases
- the volume of the stool, thus speeding up the elimination of wastes through
- the digestive tract.
- That, of course, is how high-fiber diets help prevent constipation and
- other intestinal disorders, but researchers aren't sure how this protects
- against colon cancer. They believe that by increasing fecal bulk, fiber
- dilutes carcinogens, or cancer-promoting substances, found in the intestine.
- And by speeding up elimination, these substances are in the intestine for a
- shorter length of time.
- Studies have shown that the incidence of colon cancer decreases 40 to 50
- percent if the diet includes 30 grams or more of fiber a day. (The average
- American consumes 15 grams of fiber a day.)
- But be careful. Fiber is not a cure-all. Gradually add it to your diet;
- a sudden increase may cause diarrhea and flatulence.
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- The material contained here is "FOR INFORMATION ONLY" and should not replace
- the counsel and advice of your personal physician. Promptly consulting your
- doctor is the best path to a quick and successful resolution of any medical
- problem.
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