Irritable Bowel Syndrome Message Boards | Re: question about Bran flour, with IBS-D?

Bran is 100% IF and best avoided as with all whole grain products especially for IBS-D.

In the FAQ it says "Whole wheat, with its outer layer of bran, is high in insoluble fiber. This means that it's a trigger. That's why whole wheat bread, whole wheat cereals, and bran can cause such awful problems for people with IBS."

It goes on to say "However, when you remove the bran from whole wheat you end up with white flour (the regular kind you can buy in any grocery store, that you use for home baking breads, muffins, etc.). Though this is still wheat flour, it is not whole wheat flour, and this makes a world of difference. White flour contains no insoluble fiber but it does have soluble fiber, which is the stabilizing force of the IBS diet (just picture the thick gel that results when you dissolve a piece of white bread in a glass of water). This is why white breads are such great safe staples". According to the reference below this isn't quite accurate as white flour is composed of about equal amounts of insoluble and soluble fiber when you take into consideration the resistant.

Reference
Ranhotra, G. S., Gelroth, J. A. & Astroth, K. Total and soluble fiber in selected bakery and other cereal products. . Cereal Chemistry 67, 499-501 (1990).

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