Middle-aged people should supplement with dietary fiber
Food fiber is a kind of polysaccharide, because only herbivores have the alcohol to digest cellulose, can digest and utilize cellulose, and is not digested and utilized in the human intestine, so for many years, cellulose was considered to be useless for human health. Since the Long-term Consumption of FineLy processed foods in the British, it was found that the incidence of colorectal cancer is significantly higher than that of long-term coarse people, and there are more constipation and obesity, food fiber in the diet has attracted the attention of nutritionists. After investigation, the diet of residents in Europe and the United States is too fine, and the daily intake of food fiber per person is one-sixth of that of the average resident of Africa, while there is too much fat and meat, and the annual incidence of colon cancer is more than ten times that of Africans.
Because meat food contains a lot of fat, it can make a large number of anaerobic bacteria in the intestine, decompose the undigested food residue in the intestine, and in the process of decomposition, many toxic substances are produced, including carcinogens: At the same time, because the meat contains little or no fiber in the cellulose, the intestinal stimulation is small, the intestinal mite movement is slowed down, and the intestinal mucosa is in contact with carcinogens for a long time, thus increasing the chance of cancer. Eat more cellulose food, cellulose on the intestinal wall of the agitation similar to massage effect, promote intestinal movement, so that food residues and decomposition of the poison produced by the speed of discharge, therefore, is conducive to tumor prevention.
Lack of food fiber in the diet is one of the causes of coronary heart disease and hypercholesterolemia. The intake of a certain amount of food fiber can reduce the concentration of cholesterol in bile and blood, and has a good effect on the prevention and treatment of atherosclerosis and hypercholesterolemia. According to statistics, 85% of cholelithiasis is caused by bile and cholesterol oversatuation, and middle-aged women are particularly susceptible to the disease.
Food fiber can prevent complications in diabetic patients, diabetics eat more pectin, wheat bran and other foods containing food fiber, can delay the absorption of sugar, reduce blood sugar levels, reduce diabetic urine, but also reduce the need for islets, while for weight loss, control obesity have a positive effect. When food has a high fiber content, more water can be absorbed in the intestine, which increases the water content of the stool, which can prevent constipation and reduce the incidence of life sores. It has been observed that eating refined white sugar can damage teeth, while eating sugarcane can protect teeth; This is because the sugar in sugar cane is combined with cellulose, and sugar is eaten and teeth are brushed again. Visible cellulose protects teeth.
Therefore, in the daily diet, it is not possible to ignore the frequent intake of some rough, fiber-rich foods. Blindly pursuing "fine, white, fine" food is not good for health. Eating too much food fiber may affect the absorption of calcium, iron, zinc and some vitamins, so middle-aged people should properly grasp the intake of wax fiber when choosing food. #大有学问 #
