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Dietary Fiber

Why do I need dietary fiber?

It is the part of plants that cannot be digested. Insoluble fiber adds bulk to keep foods moving through the digestive system.

Soluble fiber holds water which, in turn, softens the stool for easy bowel movements. It is an important part of your diet even though it passes through your body. A high-fiber diet can:

reduce cholesterol levels

promote regular bowel movements

improve blood sugar levels in diabetics

treat diverticular disease (inflammation of part of the intestine) and irritable bowel syndrome (abdominal pain, diarrhea, and constipation that come and go).

A high-fiber diet may help prevent some cancers, such as cancer of the colon or breast.

If you do not have enough fiber in your diet, you may have constipation. Your bowel movements may be small, hard, and dry.

What foods contain dietary fiber?

Breads, cereals, and pasta made with whole-grain flour or brown rice are high-fiber foods. Many breakfast cereals list the bran or fiber content, so it's easy to know which products are high in fiber.

All fruits and vegetables also contain fiber. Dried beans, leafy vegetables, peas, raisins, prunes, apples, and citrus fruits are all especially good sources of fiber.

How much fiber do I need in my diet?

You should have at least 14 grams of fiber for every 1000 calories that you eat every day. Read the label on food packages to find out how much fiber a serving of a food will provide. Foods containing more than 20% of the daily value of fiber per serving are considered high in fiber.

What can I do to increase dietary fiber?

When increasing the fiber in your diet, it is best to do so slowly, because large, sudden increases can cause discomfort, gas, and bloating. Start with small changes, like switching to whole-grain bread, and add a new source of fiber each week or two. You may have some gas or bloating at first, but your body will adjust in time.

Start your day with a high-fiber breakfast cereal.

Buy more fruits and vegetables. If you buy them, you are more likely to eat them. Use carrot sticks or apple slices for snacks. Include fruits or vegetables with every meal. Cooked fiber is just as effective as raw fiber.

Eat whole-grain breads.

Add whole grains and dried beans to casseroles.

Serve fruit-based desserts.

If you have constipation even though you have added high-fiber foods to your diet, talk to your healthcare provider about fiber laxatives.

Psyllium is a soluble fiber that is often used for this purpose. It can be taken as a pill or as a powder that is mixed in a glass of water. Always read and follow the directions on the label carefully.

Adding fiber to your diet is easy, and a high-fiber diet can provide long-term health benefits.

Published by McKesson Corporation.

This content is reviewed periodically and is subject to change as new health information becomes available. The information is intended to inform and educate and is not a replacement for medical evaluation, advice, diagnosis or treatment by a healthcare professional.

Developed by Ann Carter, MD, for McKesson Corporation

Copyright © 2007 McKesson Corporation and/or one of its subsidiaries. All Rights Reserved. Copyright © Clinical Reference Systems 2008Adult Health AdvisorCopyright © 2008 Elsevier Inc. All rights reserved. www.nursingconsult.com

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