Why are most types of fiber indigestible in the human GI tract?

Question:

Why are most types of fiber indigestible in the human GI tract?

Dietary Fiber:

There are two types of fiber in the foods we eat: soluble and insoluble. Both types of fiber are beneficial to our digestive health. Soluble fiber dissolves with water in the colon and forms a gel. Foods rich in soluble fiber are oats, legumes, barley, fruits, and vegetables. Insoluble fiber passes through the digestive tract with little to no change. Wheat bran, whole grains, nuts, and seeds are good sources of insoluble fiber.

Answer and Explanation: 1

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Humans lack the enzymes and the type of stomach capable of digesting fiber. Ruminant animals, such as cows, sheep, and goats have compartmentalized...

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How Fiber is Digested by the Body

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Chapter 11 / Lesson 5
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The body digests fiber through a process called fermentation. Learn about the benefits of consuming fiber, foods high in fiber, and the course of digestion in the human body.


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