1, lettuce is a vegetable with high potassium and low sodium, which can dilate blood vessels, promote urinary sodium excretion, lower blood pressure, and play a role in preventing and treating hypertension and heart disease; It contains minerals such as fluorine, calcium and iron, which can not only protect tooth health and promote tooth growth, but also have a good preventive and therapeutic effect on iron deficiency anemia; Lettuce also contains dietary fiber, which can increase satiety, relieve constipation and lose weight. Lettuce contains nicotinic acid and its sugar content is still very low, which is very suitable for diabetics.

2. Taboo of lettuce; Lettuce is cold, and it is not suitable for people with spleen and stomach deficiency and diarrhea in loose stool. Lettuce is not suitable for menstruating women and people with cold dysmenorrhea. Lettuce is a cool vegetable and should not be eaten in large quantities for a long time to avoid physical discomfort.

3. Lettuce is rich in nutrition. Protein, vitamins and minerals can supplement the nutrients needed by the human body and enhance the body's resistance and physical strength; It is also rich in iron, which is very beneficial to people with iron deficiency anemia; Lettuce is also rich in plant fiber, which can promote intestinal peristalsis, help digestion and prevent constipation. This is a healthy and beneficial vegetable.