Lettuce is rich in inorganic salts and vitamins, especially niacin. Lettuce also contains a certain amount of zinc, iron and other trace elements, and potassium ion is also very rich, which is 27 times that of sodium salt, which is conducive to regulating the balance of salt in the body.

Medicinal efficacy

Lettuce has the functions of stimulating appetite, stimulating secretion of digestive juice and promoting gastrointestinal peristalsis. For patients with hypertension and heart disease, it has the functions of diuresis, lowering blood pressure and preventing arrhythmia. If you eat lettuce regularly, it can stimulate your appetite and prevent high blood pressure and heart disease. It is a good health food.

The biochemical substances in lettuce can stimulate the optic nerve, so excessive or frequent consumption of lettuce will lead to dizziness, drowsiness, night blindness or other eye diseases. Night blindness and eye diseases caused by eating more lettuce will improve in a few days if you don't eat lettuce. Everyone must pay attention to the right amount when eating, so as not to have a certain impact on the body.