why can humans not digest fibre? How does fibre in the diet help peristalsis to happen?

Question

thanks in advance

Answer 1

To digest fibre, the enzyme cellulase must be present to break down cellulose, which compose the cell wall. In our digestive system, we can't synthesis this enzyme. Thus, we can't digest fibre.
Fibre has a high water holding capacity and provides bulk to the intestinal contents, especially in the large intestine. This aids peristalsis which allows gut muscles to grip food and move ir along quickly through the digestive tract.

Answer 2

Even in the case of bovines (cows, buffaloes and such) the cellulose fibres are not digested by their own enzymes but by bacteria (for the type and other details check).
In our case fibres help in building up bulk and that facilitates movement. Also fibres add to the easy movement of stools through the system there by making elimination easy. Sticky stools and those low in bulk - non vegetarian diets are almost completely absorbed leaving very little residue, add to the problem of constipation. Fibres also help in making up what are known as 'formed' motion that gets eliminated clean as a whistle.

Answer 3

Can Humans Digest Fiber

Answer 4

humans digest fibre fibre diet peristalsis happen

Answer 5

This Site Might Help You.

RE:
why can humans not digest fibre? How does fibre in the diet help peristalsis to happen?
thanks in advance

Answer 6

Top 10 Fiber Facts

1 Fiber helps add volume to your meals without adding calories. It also helps your digestion by assisting the peristaltic process, allowing digested food to move more easily and more quickly through the colon. Fiber helps sweep away harmful toxins.

2 A high-fiber meal helps stave off hunger because its cellular structure takes longer to break down in the intestinal tract. While it’s there, you don’t feel as though the fuel tank is empty.

3 Fiber helps reduce the absorption of fat from food and drinks and can help prevent obesity.

4 High-fiber foods give you more energy on a sustained basis because they help maintain stable blood glucose levels. The energy is released steadily over time, rather than in short bursts, like sugar provides.

5 The recommended average daily allowance for fiber is between 20 and 35 grams. For example, one cup of cooked beans has about 12 grams of fiber, a slice of whole-grain bread has about 2 grams, and an apple has about 3 grams.

6 Most Americans eat less than 50 percent of this suggested daily fiber intake. Where do you fit on the fiber continuum?

7 A high-fiber diet reduces your risk of cancer. Insoluble fiber doesn’t dissolve in water, so it moves food through your gut more quickly, which decreases your exposure to carcinogens. It also helps cleanse your colon as it moves along, acting like tiny brushes that sweep the colon walls free of potential toxins.

8 Diets high in fiber help the body absorb certain vitamins and minerals during the digestive process. This is accomplished when soluble fibers are broken down and become absorbed in the intestines rather than in the stomach.

9 Soluble fiber also helps lower blood cholesterol. A happy coincidence is that foods with plenty of soluble fiber are also delicious: oats, oat bran, oatmeal, peas, beans, barley, citrus fruits and strawberries, to name the stars.

10 Insoluble fiber is a critical part of normal bowel function. If you eat a diet rich in wheat cereals, wheat bran, grains such as rye, brown rice and barley; vegetables such as cabbage, beets, carrots, Brussels sprouts and turnips; and, everybody’s favorite, the apple, you may never need a laxative.

Answer 7

I just wanted to add something to the first answer which was quite good. Without the fiber, our digestive system doesn't have anything to grasp. It would be like trying to grip a pencil compared to gripping a roll of quarters. It is much easier to squeeze a roll of quarters.

Answer 8

High fiber low fat diets are killing people