Bitter taste can stimulate the taste buds of the tongue, activate the taste nerves, stimulate the salivary glands and promote saliva secretion because of its freshness and refreshment; It can also stimulate the secretion of gastric juice and bile. The combination of these functions will increase appetite and promote digestion, which is beneficial to strengthening physique and improving immunity.

Second, bitterness can clear the heart and strengthen the brain.

Bitter and noisy food relieves the heat in the heart, has the function of clearing the heart, makes the mind clear and makes the brain function better.

Third, bitterness can promote hematopoietic function.

Bitter food can keep the bacteria in the intestine in a normal balance. This function of inhibiting harmful bacteria and helping beneficial bacteria is helpful to the function of intestine, especially the hematopoietic function of intestine and bone marrow, and improves the anemia state of children.

Fourth, bitterness can release heat and detoxify.

Traditional Chinese medicine believes that bitterness belongs to yin, which has the function of relieving qi, and has the function of relieving heat and calming the mind for irritability caused by excessive internal heat. Relieving heat and relaxing bowels can not only reduce fever, but also excrete toxins in the body with urine and urine, so that children will not get boils and suffer from other diseases. Bitter food is in daily life, and the key is to pay attention to choice and eat it reasonably.

Bitter foods are mostly vegetables and wild vegetables, such as lettuce leaves, lettuce, celery, fennel, coriander, bitter gourd, radish leaves, turnip, alfalfa, koji and moss. Among the dried and fresh fruits, there are apples, apricots, water chestnuts, almonds, black dates and mint leaves. In addition, there are buckwheat, naked oats and so on. There are also Schisandra chinensis and lotus seed cores, which can be used as both food and medicine. It is better to drink them after soaking in boiling water. Schisandra chinensis is suitable for winter and spring, and lotus seed core is suitable for drinking in summer.