The so-called "whole wheat food" refers to the food made by grinding wheat without bran into flour, which is darker in color and rougher in taste than refined flour without bran, such as Fuqiang flour we usually eat, but it has higher nutritional value because it retains a lot of vitamins, minerals and cellulose in bran. Whole wheat food is mainly made from wheat, but also from barley and oats. But readers should pay attention to the fact that flour without bran is easier to ferment, so some manufacturers mix refined flour with bran to pretend to be whole wheat food. This kind of food can generally see large pieces of bran, but the color of noodles is relatively white, so pay attention to distinguish when buying. Whole wheat food Whole wheat refers to whole grain seeds, including germ, endosperm and nutrient-rich outermost "bran", while wheat and flour usually processed do not contain bran and germ components. The whole wheat food mentioned here refers to all kinds of foods made of whole wheat, such as whole wheat bread, graham crackers, oatmeal and so on. Now, although some foods containing honey or caramel are not different from whole wheat foods in appearance (color), it is not difficult to tell them apart as long as you read the "raw materials and nutrients" column on the food label carefully. Whole wheat food is rich in soluble fiber which can reduce low density lipoprotein in blood and prevent constipation, as well as vitamin B, vitamin E and trace elements such as zinc, iron and selenium. Nutritionists have long pointed out the importance of these nutrients to the body, and medical scientists have also found that these nutrients help prevent cardiovascular and cerebrovascular diseases and diabetes. In recent years, studies have shown that people who regularly eat "whole wheat food" have greatly reduced the risk and probability of heart disease, diabetes, digestive system diseases and cancer. At the same time, "whole wheat food" is also a very good source of low-fat calories. Both the US Department of Agriculture and the American Nutrition Association suggest that each person should eat at least three slices of bread or a cup of semi-pasta or three ounces of cereal (such as porridge) or one and a half buns or English muffins or three biscuits every day to provide one-third of the energy needed by a person every day; Moreover, "whole wheat food" is rich in crude fiber (for example, a cup of oatmeal contains 8 grams of fiber, and the National Cancer Institute of the United States recommends taking 20-35 grams of fiber every day), so eating whole wheat food can ensure satiety with less calories.