There is no such thing as which 4 kinds of people should not eat onions, onions are rich in nutrients, but people who are allergic to onions should not eat onions. There is no such thing as 4 kinds of people should not eat onions, onions are richer in nutritional value. Every 100 grams of onion contains 40 calories, 6.4 grams of carbohydrates, 1.44 grams of protein, 32 milligrams of calcium and other nutrients, calcium content in vegetables is more prominent. Usually eat onions in moderation can add nutrients to the body. However, people who are allergic to onions should not eat onions, so as to avoid allergic symptoms such as generalized rashes and itchy skin. There is no 4 kinds of people who can’t eat onions, it is recommended that the daily diet is light and nutritious, onions are more spicy, it is not advisable to eat more. If you eat onions after the appearance of a generalized rash, itchy skin and other symptoms, you should promptly seek medical attention.