1. Whole grains such as naked oats, buckwheat, oats and corn flour are staple foods rich in vitamin B, trace elements and dietary fiber.

2. Beans and bean products. Bean food is rich in protein, inorganic salts and vitamins, and soybean oil contains unsaturated fatty acids.

3, should not eat all kinds of sugar, candied fruit, canned fruit, soda, fruit juice, jam, ice cream, sweet biscuits, sweet bread and sugar cake.

Sugar is polyhydroxy aldehyde or ketone, which can be divided into aldose and ketose.

Sugar can also be divided into triose, triose, pentose and hexose according to the number of carbon atoms. The simplest sugar is triose (glyceraldehyde and dihydroxyacetone). Because most carbohydrates can be represented by the general formula Cn(H2O)n, people used to think that sugar is a compound of carbon and water, which is called carbohydrate. It is found that some sugars, such as rhamnose (C6H 12O5) and deoxyribose (C5H 10O4), do not conform to the general formula of carbohydrates. In addition, the ratio of the number of hydrogen atoms to oxygen atoms in some organic compounds is exactly 2: 1, such as formaldehyde (CH2O) and acetic acid (C2H4O2), which conforms to the definition of carbohydrate, but not sugar. Therefore, it is inappropriate to call sugar carbohydrate, but it has been used for a long time and is still used by people today.