Anyone who follows a "proper diet" knows well that it is essential the contribution of fibers that is that part of non-digestible carbohydrates or synthetic fibers that allow the body to support the prebiotic function.
Dietary fiber is not a new discovery, because the term "dietary fiber" was actually coined in 1953, but the laxative effect of fiber-rich foods has long been known. As early as 440 BC, Hippocrates had described coarsely ground wheat as a laxative. The role of fibre in the prevention and treatment of constipation is considered a panacea for industrialised countries.
The fibres are divided into several categories:

Structural polysaccharides associated with the cell wall include non-cellular polysaccharides (hemicelluloses and some pectins) and cellulose.
Nonpolysaccharide structural components, predominantly lignin.
Non-structural polysaccharides; mucilage gums secreted by cells; polysaccharides by algae .
Dietary fiber is found only in vegetable foods: fruits, vegetables, vegetables, dried fruits and grains.
The fibre content of cereals decreases with the refining process, in fact the dietary fibre concentration is higher in whole grains, especially wheat bran.
The market today is very careful to present products with the claims "high fiber" or "source of fiber" just to meet the needs of the final consumer.