Onions contain phytoncide, which can prevent colds, inhibit the growth of bacteria, and can also be used as a preservative. Onions can be used for diuresis and expectoration, and the effect is very good. Many people shed tears when cutting onions, because onions contain a substance called allicin, which can stimulate the lacrimal gland of the human body. Onions can promote human metabolism, eliminate fatigue after a day's work and improve attention.
Onion can prevent cerebral thrombosis because it contains an active ingredient that can activate plasminogen. Onions can organize platelet aggregation, so patients with cerebral thrombosis can eat more onions. Onions can also reduce human blood lipids and can be used to fight atherosclerosis.
People who often eat onions have greatly enhanced immunity and can help people resist the flu virus. Eating onions often helps to prevent cell canceration and can prevent cancer to some extent.
Not everyone can eat onions, such as people with bad eyes. From the above, we can know that onions can stimulate lacrimal glands, so they are very unfriendly to people with eye problems and may cause harm. People with yin deficiency or heat constitution can't eat onions because they taste spicy. Patients with kidney disease can't eat onions, because it will aggravate their condition and the burden on their kidneys will become heavier and heavier.
Onions have so many benefits that some people may not like them. Can be used for scrambled eggs and shredded pork, the taste will be much stronger!