The temperature changes greatly in spring, so the nutrients in spring should be mainly high in calories. Because hot and cold stimulation will accelerate the decomposition of protein in the body, leading to the decline of body resistance, it is necessary to supplement high-quality protein food, such as eggs, fish, chicken and bean products.

In spring, bacteria, viruses and other microorganisms begin to multiply in large numbers, and their vitality is enhanced, which is easy to invade the human body and cause diseases. Therefore, you should take enough vitamins and inorganic salts in your diet. Fresh vegetables such as Chinese cabbage, rape, bell pepper and tomato, and fruits such as citrus and lemon are rich in vitamin C, which has antiviral effect. Yellow-green vegetables such as carrots and amaranth are rich in vitamin A, which can protect and strengthen epithelial cells of upper respiratory mucosa and respiratory organs, thus resisting various pathogenic factors. Food rich in vitamin E should also be eaten to improve human immune function and enhance the body's disease resistance. This kind of food includes sesame, blue cabbage and cauliflower.