dietary fiber, which is not attacked by enzymes in the stomach and small intestine so it reaches the colon without degradation, can have different effects on the length of the digestive system. Thus, explained that the fiber has a significant influence on the absorption of nutrients and causes the stomach to "increase the viscosity and delayed gastric emptying," said the researcher in a paper within the framework of the Universidad Internacional de Andalucía (UNIA) in Sevilla.
In line with this, Saura said fiber consists of two fractions - insoluble and soluble in water - and their properties are determined primarily by rates of these two fractions, so that "it is insoluble and poorly fermented has a strong laxative and bowel regulator," while "soluble fiber is fermented in a high proportion and its main properties are associated with decreased cholesterol and blood glucose and the development of intestinal flora. "
The first property of the fiber, according to the researcher, is "the direct relationship between their intake and gastrointestinal functioning," but added that diverticulosis also "has been associated with diets low in fiber," since " fiber increases the excretion and colonic pressure decreases, so it has therapeutic action on this medical condition. "
also Saura told that some studies" associated with high fiber intake with a reduced risk of colorectal cancer, however, the association need not be direct, because seems to be a reciprocal association between fat and fiber and also a high fat intake has been associated with incidence of these cancers. "
Thus, in the treatment of obesity" have shown the beneficial effects of intake Fiber-rich foods, "said the researcher, adding that it" is reflected in a weight loss by different mechanisms, like the feeling of satiety, increased excretion of fat and protein, lower glycemic index or decrease in the caloric content of the diet. "
He added that" other studies have shown that soluble fiber lowers the levels of blood cholesterol and tend to reduce, on the other hand, the speed with which the blood glucose reaches the secretion of insulin. "This property is based the recommendation for diabetics to low glycemic foods rich in soluble fiber such as legumes fruits and vegetables, he said.