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Onion, is a very common vegetable on the table of the people, but also a very nutritious ingredients, not only rich in vitamin C, carotene, folic acid, potassium, zinc, selenium, and fiber and other nutrients, but also two special nutrients - prostaglandin A and quercetin, these two special nutrients, so that onions have many other foods irreplaceable health effects.
To maintain cardiovascular health, onion is currently the only vegetable containing prostaglandin A, prostaglandin A is a strong vasodilator, can soften blood vessels, reduce blood viscosity, maintain blood vessel elasticity, but also promote the excretion of sodium and potassium, which is conducive to lowering blood pressure, increasing blood flow in coronary arteries, and preventing the formation of blood clots. Quercetin, which is rich in onions, is a kind of flavonoid substance, which can reduce lipids in the blood, protect blood vessel elasticity, reduce blood vessel tension, and have a certain "blood vessel cleaning" effect.
To promote cardiovascular and cerebrovascular health, onions contain a certain amount of sulfide, and moderate intake can prevent platelet accumulation, inhibit cholesterol synthesis, and promote blood circulation, thereby promoting cardiovascular and cerebrovascular health. Studies have also found that sulfides in onions can also reduce cholesterol and triglyceride levels and improve red blood cell membrane function. Onions are also rich in antioxidant flavonoids, which can help prevent heart attacks when eaten regularly.
Prevent cancer
The trace element selenium contained in onions is a strong antioxidant, which can eliminate free radicals in the body, enhance cell vitality and metabolic capacity, and have anti-cancer and anti-aging effects.
The "quercetin" contained in onions is one of the most effective natural anti-cancer substances currently known, which can prevent cell mutations and control the growth of cancer cells, thereby playing a role in preventing and fighting cancer.
Enhance resistance
Onions contain anthocyanins, especially purple-skinned onions, which are phytochemicals that are dozens of times stronger than the antioxidant capacity of vitamin C and vitamin E, able to scavenge free radicals and strengthen resistance. In addition to this, it also has benefits in skin whitening and increasing skin smoothness.
Promote intestinal metabolism
Onions are rich in dietary fiber, and regular moderate intake can play a role in promoting intestinal metabolism, removing intestinal waste, preventing constipation, and preventing colon cancer; At the same time, consuming a moderate amount of dietary fiber can also reduce the risk of obesity and type 2 diabetes.
