Onions are also called green onions and round onions. It is widely used in Western food and is known as the "Queen of China" in the West.

Onions have unique medical and health care functions:

1. Onions contain calcium, phosphorus, iron and other minerals as well as a variety of vitamins.

2. Onions contain protein, sugar and crude fiber.

3. Onions are the only plants that contain prostaglandin A. Prostaglandin A contained in onions is a powerful vasodilator, which can reduce the resistance of peripheral blood vessels of the human body, promote the excretion of sodium salts in the body, reduce blood viscosity, reduce blood vessels, and prevent thrombosis.

4. Onions have the effect of lowering serum cholesterol.

5. The disulfide contained in onions can lower blood sugar and increase the concentration of insulin in plasma. It is very beneficial for elderly patients with diabetes to eat it regularly.

6. The content of trace element selenium in onions is higher among all kinds of vegetables. Selenium is a strong antioxidant that can delay aging. At the same time, selenium can also remove free radicals in the body, enhance cell vitality and metabolism, and has anti-cancer effects.

So onions have high medical value.

The best way to eat onions is to eat them raw with cold salad or stir-fry with warm oil. At the same time, you can try fried eggs with onions or fried pork liver with onions, as well as stir-fried noodles. You can add an appropriate amount of onions to the noodles, which is delicious!