How to maintain immunity through reasonable diet? What dietary nutrition should frontline epidemic prevention staff pay attention to? What should ordinary residents pay attention to in diet and nutrition? On the afternoon of March 3, Zhang Bing, an expert of the Gansu working group of the comprehensive group of the joint prevention and control mechanism of the State Council and deputy director of the Institute of nutrition and health of the China Center for Disease Control and prevention, was interviewed by Xinhua news agency. Q: how to maintain good body immunity through diet in epidemic prevention and control? A: first, the body should have sufficient high-quality protein, because protein is the material basis of the body's immune system; Second, eat foods rich in vitamin A, such as chicken liver, duck liver, poultry eggs, etc; Third, eat foods rich in vitamin C, mainly some fruits with sour taste; Fourth, eat foods rich in trace elements such as iron, zinc and selenium, such as animal liver, seafood and nuts; Fifth, eat foods rich in bioactive substances, such as bacteria, algae, mushrooms, black fungus, etc. In addition, it is also necessary to ensure good sleep, maintain a good mood and exercise. Q: what are the dietary nutrition suggestions for front-line epidemic prevention staff? A: first, keep it clean. To have a good dining environment, it is recommended to have meals alone or separately rather than together. If you can choose your own meals, you should choose different kinds of food for each meal. There should be as many kinds of food as possible, but the amount of each kind of food should not be more, that is, a small amount and a variety; If it is a set meal or boxed meal, it is best to have a professional nutritionist to guide the catering, so that all kinds of food can be matched reasonably and diverse. The dining place should have thermal insulation or heating equipment, and eat less cold food. Secondly, we should ensure adequate drinking water. 1500 to 2000 ml of water per day. In terms of food intake, eat more potatoes, vegetables, fruits, milk or dairy products. Eat less foods with high salt content, high sugar content and too greasy. If you are busy or your diet is not balanced and diverse, you can take dietary nutrient supplements or special medical formula foods, such as single capsules or tablets such as vitamin A, vitamin E and vitamin C. Q: what precautions do ordinary residents have in diet and nutrition? A: ordinary residents can't "let themselves fly" because of home epidemic prevention. We should eat three meals regularly, eat early, eat well at noon and eat less at night. We should eat three meals regularly and quantitatively. It is best to eat eight full at dinner; Eat more vegetables, fruits and a small amount of nuts; Eat an appropriate amount of meat. It is recommended to eat one or two meat every day, and replace the intake of meat varieties; Drink milk every day. It is recommended that the total amount should not be less than 300 ml; Ensure adequate drinking water, i.e. 1500 to 2000 ml of drinking water; Pay attention to food hygiene. It's best not to eat cold dishes. The cooked food you buy must be fully heated and cooked to prevent intestinal problems caused by microbial pollution; Don't eat too much. Exercise every day. (outlook new era)