Lettuce leaves are rich in nutrients, including protein, dietary fiber, sugar, vitamin A, vitamin B, vitamin C, calcium, magnesium, potassium, iron and phosphorus. Enhance satiety, reduce the intake of high-calorie food, inhibit the absorption of fat and lose weight. Stimulate the secretion of gastrointestinal digestive juice, promote gastrointestinal peristalsis, accelerate the discharge of toxins in the body, moisten the intestines and relax the bowels. Promote maternal milk secretion, effectively prevent and fight cancer.

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.

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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.

The above contents refer to Baidu Encyclopedia-Lettuce Leaves