As soon as beginning of winter passed, the weather became colder and colder. How to adjust our diet in cold weather? The theory of TCM health preservation tells us that we should eat more warm food to nourish the five internal organs, enhance the body's resistance, cultivate vitality and promote the rise of yang in the body. This can not only make the body stronger, but also play a good role in keeping out the cold. According to the different nutrients contained in food, the winter diet should have the following characteristics: eat more staple food and eat some mutton, quail and sea cucumber appropriately. Protein, fat and carbohydrates are called thermogenic nutrients. Therefore, the intake of staple food and oil should be appropriately increased in winter to ensure the supply of high-quality protein. Dog meat, mutton, beef, chicken, venison, shrimp, pigeon, quail, sea cucumber and other foods are rich in protein and fat, generating a lot of calories. Traditional Chinese medicine believes that tonifying kidney and strengthening yang, warming the middle and lower temperature, benefiting qi and generating blood, and keeping out the cold have the best effect. Fear of cold is related to calcium deficiency and iron deficiency. People's fear of cold is related to their lack of intake of certain minerals. For example, the content of calcium in human body can directly affect the elasticity and excitability of myocardium, blood vessels and muscles; Iron deficiency in blood is an important cause of iron deficiency anemia, which is often characterized by low fever and hypothermia. Therefore, supplementing foods rich in calcium and iron can improve the body's ability to keep out the cold. Calcium-containing foods mainly include milk, bean products, kelp, seaweed, shells, oysters, sardines, shrimp and so on. Iron-containing foods are mainly animal blood, egg yolk, pig liver, soybeans, sesame seeds, black fungus and red dates. Kelp and laver can promote the secretion of thyroxine and generate heat. There is a thyroid secretion called thyroxine, which can accelerate the oxidation of many tissues and cells in the body, increase the body's heat production capacity, enhance the basal metabolic rate, accelerate the blood circulation of the skin, and keep out the cold, while foods containing iodine can promote the secretion of thyroxine. Foods rich in iodine are: kelp, seaweed, Nostoc flagelliforme, jellyfish, spinach, Chinese cabbage, corn and so on. Animal liver and carrots can increase cold resistance. The cold climate causes obvious changes in human vitamin metabolism. Increasing the intake of vitamin A and vitamin C can enhance the cold tolerance and adaptability to cold, which has a good protective effect on blood vessels. Vitamin A mainly comes from animal liver, carrots and dark green vegetables.