People live between heaven and earth, man and nature are a unified whole, and the changes of the four seasons in nature are closely related to the functional activity system of the five internal organs of the human body. This point has been elaborated in great detail in the works of medical immortals and medical saints in all previous dynasties in China. In Neijing, it is discussed that diet should be moderate, cold and warm, rhythmic, seasonal and five flavors. People are always restricted by the changes of the four seasons. As long as the internal environment (that is, people themselves) and the external environment (that is, nature) can be coordinated, the five internal organs can live in peace.

Spring is the season for all things to grow, and the human body is also yang-like, and qi and blood tend to appear outside. The internal heat gathered in a winter radiates outward, and the liver qi is sufficient. At this time, the diet should be changed from thick taste in winter to light taste, which is the theory that Chinese medicine calls this spring to nourish essence. Eat less sour and more sweet in spring to nourish your temper. If you eat too much acid, the liver qi will overflow and your temper will fail. Eat less spicy food in spring, so as to warm bloom in spring. Overeating spicy products will make people feel hot inside, such as mutton, dog meat, pepper and so on. At this time, you can eat more vegetables, such as bamboo shoots, celery, Chinese cabbage, radish and spinach. Meat such as pork and crucian carp; In addition to rice and white flour, you can eat more miscellaneous grains such as millet, corn and soybeans.

In summer, when the weather is hot, people's heart function is the most vigorous. The heart belongs to fire, and the internal heat is mainly in summer. Excessive heart fire easily restricts lung qi, at which time gastric acid secretion decreases and digestive ability weakens. Pay attention to color, aroma, taste and shape in diet, try to choose foods that are easy to arouse appetite, and don't eat more bitter foods. Because of bitterness, you can nourish your heart by eating more cold dishes and eggs, duck eggs, bean products, sesame paste, mung beans, watermelons, fruits and so on. Put some garlic and mustard noodles on the seasoning to sterilize and detoxify and increase appetite. You can drink more cold drinks in summer, but not too much. Too much will dilute gastric juice and affect digestion, so summer is very clear.

In autumn, it is dry and cool. At this time, lung qi is vigorous, corresponding to autumn qi. Don't make your lungs too angry in your diet. Pungent taste belongs to lung, sour taste belongs to liver. Eat less pungent taste and increase sour taste in autumn. Autumn is windy and dry, but at this time food is quite rich, especially vegetables and fruits, so as long as you don't eat too much spicy and warm food, you can eat more of the rest, so autumn is flat.

The winter climate is cold, when the kidney qi is strong, and the kidney qi corresponds to the winter qi. In diet, we should reduce the salty and bitter taste. You can eat more spicy food in spring and autumn. When people's activities are restrained in winter, you should store energy in your body and eat more thick food, such as dog meat, hot pot, stew and fish, to keep out the cold. Seasonings can be used for spicy food, such as pepper, onion, ginger, garlic and vegetables, and Chinese cabbage, potatoes, radishes, mung bean sprouts, potherb mustard and tofu should be eaten less. So it nourishes in winter.