1, lowering blood pressure. Lettuce is a vegetable with high potassium and low sodium. Every100g of lettuce contains 212mg of potassium and 36.5mg of sodium. Potassium is an essential element to maintain human life, which can dilate arteries, reduce peripheral vascular resistance, promote urinary sodium excretion, reduce cardiovascular burden, reduce arterial wall thickening in patients with hypertension, and achieve the purpose of lowering blood pressure. People with hypertension and arrhythmia often eat fresh lettuce, and the effect is remarkable.

2, diuresis and lactation. Lettuce is rich in potassium ion, which is 27 times that of sodium salt, which is beneficial to the balance of water and electrolyte in the body and promotes urination. Lettuce contains more nicotinic acid, which can increase milk secretion and is an important member of maternal diet.

3. Fluoride and blood. Lettuce is rich in fluorine, which can participate in the formation of enamel and dentin and the growth of bones. The organic compounds contained in lettuce are rich in iron that can be absorbed by human body, which is very beneficial to patients with iron deficiency anemia. Iron contained in lettuce is easily absorbed by human body under the action of organic acids and enzymes. The white serosity of lettuce stems has sedative and hypnotic effects and has the function of regulating the nervous system.

4, laxatives. Lettuce contains a lot of plant cellulose, which can promote intestinal peristalsis, dredge digestive tract and help defecation, and can be used to treat various constipation.

5. Anti-cancer effect.

6. Lettuce contains an aromatic hydrocarbon hydroxylated fat, which has a preventive effect on liver cancer and gastric cancer, and can also reduce the side effects of radiotherapy or chemotherapy for cancer patients. It is an anticancer vegetable.

7. Open the interest elimination and stagnation elimination system. Chinese medicine believes that lettuce tastes bitter and cold, and has the effects of clearing away heat and toxic materials, reducing swelling and resolving hard mass. Lettuce stimulates the secretion of digestive enzymes and stimulates appetite. Its milky white serosity can enhance the secretion of gastric juice, digestive gland and bile, which is especially beneficial to patients with weakened digestive function and decreased acidity of digestive tract.

8, contribute to growth and development. Lettuce is rich in phosphorus, calcium and other elements, which is very beneficial to promote the normal development of bones, prevent rickets and help normal teething.

9. Improve myocardial contractility. Patients with neurosis, hypertension, arrhythmia and insomnia often eat fresh lettuce, which has a certain therapeutic effect and can be beneficial to vascular tension, improve myocardial contractility and strengthen diuresis.

10, improve human blood sugar metabolism. Lettuce is low in carbohydrate and rich in inorganic salts and vitamins, especially nicotinic acid. Nicotinic acid is an activator of insulin, and diabetics often eat lettuce, which can improve the metabolic function of sugar.

1 1, preventing and treating anemia. Lettuce contains a certain amount of trace elements such as zinc and iron, especially the iron in lettuce is easily absorbed by the human body. Eating fresh lettuce often can prevent iron deficiency anemia.