Potassium in lettuce can promote urination, which is of great benefit to patients with hypertension and heart disease. In addition, people who love to cough in autumn can eat more lettuce to relieve cough.

2. Zizania latifolia

Zizania latifolia is a special vegetable in China, which is also called "the three famous dishes in the south of the Yangtze River" with water shield and perch. Because of its tender texture and sweet taste, it is regarded as a good vegetable. Water bamboo is sweet, cool and smooth. It can not only induce diuresis and water, but also help to treat edema of limbs and dysuria. It can also clear away heat and relieve summer heat, and quench thirst. Stir-fry with a little bacon and water bamboo, and the taste is more fragrant.

3. Lotus root

Lotus root is sweet and tasteless, which can clear away heat and reduce fire, moisten lung and relieve cough. Lotus root has high nutritional value and is rich in trace elements such as iron and calcium. It is also rich in protein, vitamins and starch, and has obvious effects of invigorating qi and blood and enhancing human immunity.

4. Bean sprouts

Soybeans and mung beans contain a lot of protein, fat and carbohydrates, as well as essential elements such as sodium, iron, phosphorus and calcium. After germination, it can not only keep the original substances, but also increase the contents of vitamins B 1, B2, B 12 and C. Chlorophyll in bean sprouts can prevent and treat rectal cancer. Aspartic acid rich in water in soybean sprouts can greatly reduce the accumulation of lactic acid, thus helping to eliminate fatigue.