Lettuce is high in potassium, which is beneficial to diuresis and relieve atrial pressure, and is extremely beneficial to patients with hypertension and heart disease.

It contains a small amount of iodine, which has a great influence on people's basic metabolism, physical and mental development and even emotional regulation.

It is rich in fluorine and can participate in the growth of teeth and bones.

In addition, some substances in lettuce can stimulate the optic nerve. According to ancient books, eating more lettuce makes people's eyes paste, and they can recover by themselves after stopping eating for a few days. Therefore, people with poor eyesight should not eat more, and people with eye diseases, especially night blindness, should also eat less.

Efficacy and function of lettuce

Lettuce tastes sweet, cool and bitter, and enters the stomach; Has the effects of benefiting five internal organs, dredging meridians, clearing stomach heat, and clearing away heat and promoting diuresis; It can be used for dysuria, hematuria, and mammary obstruction.

Enlightening digestion: Lettuce is fresh and slightly bitter, which can stimulate the secretion of digestive enzymes and increase appetite. Its emulsion can enhance the secretion of gastric juice, digestive gland and bile, thus promoting the functions of various digestive organs, which is especially beneficial to patients with weakened digestive function, decreased acidity of digestive tract and constipation.

Diuresis and lactation: the potassium content of lettuce is much higher than that of sodium, which is beneficial to the balance of water and electrolyte in the body and promotes urination and milk secretion. It has a certain dietotherapy effect on patients with hypertension, edema and heart disease.

Strengthening the body and preventing cancer: Lettuce contains a variety of vitamins and minerals, which has the function of regulating the nervous system. Its organic matter is rich in iron that can be absorbed by human body, which is very beneficial to patients with iron deficiency anemia. The hot water extract of lettuce has a high inhibitory rate on some cancer cells, so it can be used to prevent cancer.

Relaxation: 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.