Lettuce can improve the function of digestive system. Because it tastes fresh and bitter, it can stimulate the secretion of digestive enzymes and increase appetite. Lettuce contains a lot of cellulose, which can promote the peristalsis of human intestinal wall and prevent constipation. The whey of lettuce can enhance the secretion of gastric juice, digestive glands and bile, and can quickly help the human body to expel stool, toxins and turbid gas, thus playing the role of clearing the intestines, losing weight and slimming.
Lettuce has the functions of moistening hair, diuresis and lactation. The content of potassium in lettuce is much higher than that of sodium, which can promote urination and maintain water balance. Lettuce can also promote lactation. According to "Compendium of Materia Medica", Li Shizhen once used lettuce with wine and decocted in water to treat postpartum milk obstruction. People with hair loss due to potassium deficiency often eat lettuce, which can make their hair black, thick and smooth.
Fluorine contained in lettuce can participate in the formation of enamel and dentin and the growth of bones. In addition, lettuce also contains minerals such as iron and calcium, which is very beneficial for children to change their teeth and grow their teeth. The high iodine content in lettuce is beneficial to the basic metabolism, mental, physical development and emotional regulation of human body. Therefore, lettuce has a calming effect, and regular consumption helps to eliminate tension and help sleep.