Onion is rich in calcium, phosphorus, iron, vitamin B 1, vitamin C, carotene, nicotinic acid, prostaglandin A, diallyl disulfide and sulfur amino acid, in which sulfur amino acid can reduce blood lipid and blood pressure, and prostaglandin A can dilate blood vessels, reduce blood viscosity and prevent thrombosis. Onions are also rich in trace element selenium, which can reduce the incidence of cancer. Ordinary adults eat 50-80 grams of onions raw every day, which has a very significant health care effect.

Disadvantages:

It is irritating to human skin, and its smell can destroy some tissues of human body (in fact, it has nothing to do).

Onions generally do not lose their hair when eaten raw, but it is best to shred them and dip them in sesame oil, which is not only delicious but also more beneficial to the human body.