(1) Vegetables rich in vitamin C: Vitamin C, also known as ascorbic acid, has a very close relationship with human health, especially its anticancer effect is well known. Vitamin C can prevent the formation of nitrosamines, a carcinogen, and inhibit the growth and division of cancer cells.

Vegetables rich in vitamin C are: tomatoes, Chinese cabbage, Chinese cabbage, rape, cabbage, amaranth, spinach, celery, garlic sprouts, green onions and so on.

(2) Vegetables rich in vitamin A: The most striking anticancer vegetable is carrot. Carrots are rich in anti-cancer substances-carotene. Carotene is an anticancer substance of natural five poisons, which can alleviate inflammation of epithelial tissues such as throat, esophagus and stomach, and also prevent cell mutation caused by carcinogens, thus inhibiting precancerous lesions of some tissues. Carotene is the main component of vitamin A.

Vegetables rich in vitamin A mainly include: dried pepper, Chinese cabbage, pumpkin, rape, cocoon vegetable, spinach, leek, celery leaves and so on.

(3) cauliflower, cabbage, lettuce, radish and other vegetables have obvious anti-cancer effects. According to the American Cancer Society, cauliflower and cabbage can prevent cancer, and eating them regularly can reduce the chance of getting some cancers. Cauliflower and cabbage are rich in dithizone, which can prevent cancer. These two kinds of vegetables also contain trace element molybdenum, which can block the synthesis of nitrosamines, so they have anti-cancer effects. There is also an enzyme in lettuce and radish that can decompose nitrosamines and prevent carcinogens from playing a role in the human body.