What is Dietary Fibre?

What is dietary fibre, and how is it beneficial for the body? This is a question often asked by students of Biology.

Dietary fibre refers to the indigestible elements that are present in the diet e.g. cellulose. Dietary fibre is important because it provides bulk to the intestines, and helps in peristalsis.

Peristalsis is the wave-like, muscular movement of the intestinal walls. These movements allow the food to be mixed with the digestive juices, and also help the food move down the digestive canal. If peristalsis is not fast enough, the large intestines will absorb too much water out of the moving matter, and thus cause constipation.

Constipation can be avoided by drinking lots of water, and including fresh greens in your diet e.g. salads, fresh fruits, and whole bread. Exercise also helps promote peristalsis.


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