7 health-preserving dishes in winter that you shouldn’t miss

　　Winter lettuce 1: Lettuce

　　Reason for listing: Rich in potassium and iodine

　　Nutritional quick check: The meat of lettuce is tender and suitable for eating raw or stir-frying. Eating lettuce often in winter can enhance the secretion of gastric juice and digestive juice and increase the secretion of bile. The potassium contained in lettuce is 27 times that of sodium, and the vitamins contained in lettuce are also helpful in promoting urination and maintaining water balance, which is of great benefit to patients with high blood pressure and heart disease.

　　Lettuce contains high iodine content, which will have a beneficial impact on the body's basic metabolism and physical development. Lettuce leaves are much more nutritious than lettuce stems. The fluoride contained in the lettuce diet can participate in the formation of tooth enamel and dentin, and participate in the growth of bones. In addition, winter sufferers cough People who eat more lettuce leaves can also relieve cough.