Second, it is necessary to supplement foods containing methionine and inorganic salts to improve the body's cold resistance. Methionine can provide a series of methyl groups necessary for cold tolerance by transfer. The cold climate increases the excretion of creatine in human urine, accelerates the metabolism of fat, and requires methyl to synthesize creatine, fatty acids and phospholipids, and releases heat in mitochondria. Therefore, we should eat more foods containing methionine in winter, such as sesame seeds, sunflower seeds, yeast, dairy products, leafy vegetables and so on. In addition, medical research shows that people's fear of cold is closely related to the lack of inorganic salts in their diet. Therefore, we should eat more vegetables with roots in winter, such as carrots, lilies, sweet potatoes, lotus roots, green vegetables and Chinese cabbage, because the roots of vegetables contain more inorganic salts. The content of calcium in human body can directly affect the flexibility and excitability of human blood vessels and muscles, and calcium supplementation can also improve the cold resistance of human body. Foods containing more calcium are: milk, bean products, shrimp skin, kelp, Nostoc flagelliforme, sesame sauce and so on.
Third, eat more foods rich in vitamin B2, vitamin A and vitamin C to prevent diseases such as angular stomatitis, cheilitis and glossitis. The cold climate has strengthened the oxidation function of human body, and the vitamin metabolism of human body has also changed obviously, which is prone to symptoms such as dry skin, chapped skin, angular stomatitis and cheilitis. Therefore, vitamin B2 should be supplemented in time in the diet, mainly in animal liver, eggs, milk, beans and other foods; Foods rich in vitamin A include animal liver, carrots, pumpkins and red sweet potatoes. Vitamin C mainly exists in fresh vegetables and fruits.