Citrus Citrus fruits, such as oranges, grapefruit, oranges, lemons, kumquat, etc., are rich in vitamin C, which can prevent nitrosamines from forming, and are suitable for patients with gastric cancer, laryngeal cancer, breast cancer and lung tumor. Hawthorn is often used to stimulate appetite, promote digestion and reduce blood fat. It can promote blood circulation, remove stasis, eliminate stagnation, and inhibit the growth of cancer cells. At the same time, it is rich in vitamin C, which is suitable for patients with digestive tract and female reproductive system cancers such as gastric cancer and breast cancer. It is rich in B- carotene, vitamin C and B vitamins. It contains a group of triterpenoids as effective anticancer components. Folk eat jujube porridge and simmer jujube with astragalus to enhance physical fitness and prevent breast cancer. Red apples and grapes researchers have found that red-skinned fruits and vegetables such as red apples have preventive and therapeutic effects on breast cancer. Scientists have found through experiments that some plant components contained in red-skinned fruits and vegetables can effectively inhibit the growth of protein in tumor cells, and at the same time, reduce the response ability of tumor cells to estrogen and prevent breast cancer. Purple grapes, etc. also contain this plant component. Kiwi is a rare fruit, and its vitamin C content is 4-12 times that of oranges, 3 times that of apples and 6 times that of grapes. Studies have shown that the substances contained in it can block the generation of nitrosamines in human body, thus having good anti-cancer and anticancer effects.