The content of vitamin C in onion is 10 times higher than that in apple and 2 times higher than that in citrus. Onions also contain allicin, which has a strong bactericidal effect.

You can eat garlic for sterilization in spring.

Garlic has a strong bactericidal ability. The latest research shows that garlic also has a certain brain-strengthening effect, and is rich in vitamin B 1, which can resist the harm of radioactive substances to human body.

Eat iron-supplemented lettuce in spring.

Lettuce contains many vitamins, among which iron is rich.