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Why do you cry when cutting onions?

Causes of tears when cutting onions When cutting onions, the destroyed onion cells will release an alliinase called alliinase. Under its action, the sulfur-containing compounds in the volatile oils of onions are converted into a gaseous chemical substance. This substance can stimulate the nerve endings of the cornea of ??the human eye, and the human body commands the tear glands to secrete tears through nervous system activity to flush away the irritating substances. Experts from the German Green Cross organization suggest that people can cut onions in flowing water so that part of the water-soluble sulfur compounds can be washed away. Or put the onion in the refrigerator for a period of time before cutting it so that less irritating gases evaporate. In addition, some scientists believe that the irritating gas produced when onions are damaged is obviously a manifestation of self-defense. They speculate that initially, this behavior keeps away enemies that eat it, such as rats and voles. When you cut an onion, the destroyed onion cells release an alliinase enzyme called alliinase. Under its action, the sulfur compounds in the volatile oils of onions are converted into a gaseous chemical substance. This substance can stimulate the nerve endings of the cornea of ??the human eye, and the human body commands the tear glands to secrete tears through nervous system activity to flush away the irritating substances. Experts from the German Green Cross organization suggest that people can cut onions in flowing water so that part of the water-soluble sulfur compounds can be washed away. Or put the onion in the refrigerator for a period of time before cutting it so that less irritating gases evaporate. In addition, some scientists believe that the irritating gas produced when onions are damaged is obviously a manifestation of self-defense. They speculate that initially, this behavior keeps away enemies that eat it, such as rats and voles. ========================= Its nutritional value Onion is a plant of the Liliaceae family. It is famous for its onions, onions, and hybrids. It is known as the "Queen of Dishes" at home and abroad. ", often used to treat hypertension, hyperlipidemia, cardiovascular and cerebrovascular diseases, and has health care effects, as well as sterilization and other effects! =========================No It’s a question of whether it’s good to eat too much or not. As long as you eat everything and have a balanced nutrition, that’s because each food has its own nutritional value, and what nature has settled on is the principle of balance, so don’t look at everything so carefully. , otherwise life will be very tiring. The key is that you are not picky about food and achieve balanced nutrition! ]