1. Vitamins: To improve immunity, you need to supplement vitamin-rich foods, such as vitamin A, vitamin B, vitamin C, and vitamin E, etc., can improve the body's immune function, including fresh fruits and vegetables.
2. High-quality protein: Protein-rich foods include lean meat, fish, dairy, eggs and soy products, etc., after appropriate intake can improve the body's immune function.
3. Minerals: minerals include calcium, iron, zinc, selenium, etc., add shrimp, milk and beef, etc., because minerals are rich, can enhance the body's immune function.
4. Sufficient energy: should be supplemented with whole wheat flour or rice, etc., to ensure that the body needs the supply of calories.