Onions are very rich in nutrients, not only rich in potassium, vitamin C, folate, zinc, selenium, and fiber and other nutrients, but also two special nutrients - quercetin and prostaglandin A.

These two special nutrients, so that the onion has a lot of other foods irreplaceable health! Benefits: Prevents cancer, maintains cardiovascular health, stimulates appetite, aids digestion, and sterilizes bacteria.

Onions can effectively prevent "rich people's disease", onions contain yellow urea butyric acid, can make the cells better use of sugar, thus reducing blood sugar. Onions also contain prostaglandins, can expand blood vessels, reduce peripheral vascular resistance, promote the excretion of sodium, so that increased blood pressure down.

Reliance on onions to prevent or treat influenza claims do not have a firm scientific basis

Experimenters have done experiments, they use the national standard in the public **** place microbiological testing methods, in a 30 square meters of the room to select five monitoring points, and then placed onions in the room, and then on the number of colonies of the five monitoring points to monitor the change in its number. The experimenters prepared three onions, cut off the ends and placed them in different locations in the room, according to the Internet.

The results showed that in the first 24 hours after the onions were placed in the room, the average number of colonies at the five monitoring points did not decrease, but rather increased slightly; at 48 hours, the number of colonies in the room was equal to the number of colonies in the room when the onions were not placed. This shows that the onions did not reduce the number of bacteria in the room.

Onions have the effect of dispersing wind and cold because they contain fatty volatiles propylene sulfide, which has a strong bactericidal effect. If you eat some onions every day, the bacteria in the respiratory tract and intestines will have a certain inhibitory effect. But placing onions in the room has a minimal bactericidal effect. Besides, many influenza is caused by viral infections, and onions have no inhibitory effect on viruses.

Because of its antiseptic and antibacterial effects, in some countries and regions, people extract essential oils from onions as medicines to treat and control infectious diseases. However, there is no clinical research on the prevention and treatment of influenza. Moreover, there is no evidence related to the ability of onions to kill viruses. Therefore, there is no exact scientific basis for emphasizing the reliance on onions to prevent or treat influenza.

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