What should the elderly eat?

　　1. Staple food and non-staple food

　　Usually, the staple food we refer to refers to rice, noodles, cereals, etc., and the non-staple food refers to meat, eggs, vegetables and other foods. Both staple food and non-staple food are indispensable. Some people advocate eating more meat and less grain, which is not in line with health preservation. Some people want to lose weight and only eat staple foods and no non-staple foods, but the result is counterproductive. The excess starch will be decomposed into Grape sugar and converted into fat for storage. Some people feel that staple food is not nutritious and they skip meals, eat irregularly, and have constant snacks. These do not meet the requirements of dietary regimen.

　　2. Fine grains and coarse grains

　　Eating whole grains has become a new fashion in recent years. Many people like to eat whole grains, thinking that they have high nutritional value, good taste, and are beneficial to teeth, facial muscles, etc. However, although whole grains are good, it is not advisable to eat too much. Because it contains too much dietary fiber, it will affect the body's absorption of protein, inorganic salts and certain trace elements, and even damage the body's fertility. In daily diet, the ratio of fine grains to coarse grains should be controlled at 4:6. healthy。

　　3. Acidity and alkalinity

　　In fact, the acidity and alkalinity of food is not determined by our sense of taste, but by its mineral content. Therefore, fruits usually taste sour, such as lemons and star fruits, but they are alkaline foods. Another example is rice and noodles, which have no obvious taste reaction, but are acidic foods. If we classify daily food, most animal foods are acidic foods, such as fish, meat, and shellfish. In addition, most cereals and some nuts are also acidic foods.

　　4. Meat and vegetarian food

　　A reasonable combination of meat and vegetables can make people feel satisfied without eating too much animal food, which will increase the burden on the blood and heart. Our Chinese people’s eating habits are based on plant foods and supplemented by animal foods. This kind of dietary structure is more conducive to longevity.