editor’s words: in this era of cancer color change, how to prevent cancer is a topic of concern to everyone. In this issue, I would like to introduce to you the “anti cancer star in nutrients”. But it is best to get these nutrients from food, otherwise excessive intake may have the opposite effect.

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anti-cancer nutrients vitamin C

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prevent cancer and gastric cancer, esophageal cancer

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fresh fruits and vegetables

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vitamin C has strong antioxidant activity, Zhejiang University School of medicine and Zhejiang University School of chemical medicine joint research shows that reasonable intake of vitamin C can help prevent gastric cancer. This may be because vitamin C can inhibit the transformation of nitrite into nitrosamine, which is one of the causes of gastric cancer. In addition, the survey shows that the vitamin C content in the blood of patients with esophageal cancer is only 1 / 9 ~ 1 / 8 of that of residents in the low incidence area of esophageal cancer, which may be related to the function of vitamin C in inhibiting the formation of carcinogens and enhancing the body’s immunity.

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suggest that fresh fruits and vegetables are the main foods rich in vitamin C, such as green pepper, radish tassel, mustard, sour jujube, fresh jujube, kiwi fruit, citrus, etc. Generally speaking, the content of vitamin C in vegetables is higher than that in fruits. Need to remind is that vitamin C is relatively delicate, high temperature, water is easy to lose, vegetables in cooking should be washed first after cutting, quick fire quick fry, or can be blanched hot, cold mix. It is well known that calcium is an essential nutrient for bone health, but it is rarely known that it is also associated with the occurrence of colorectal cancer. A study by the cancer center at the University of Minnesota in the United States shows that if women eat more than 800 mg of calcium a day, the risk of colorectal cancer can be reduced by 46%, and patients with high calcium intake will live longer. The reason may be that the cholic acid and free fatty acid in the large intestine can stimulate the excessive proliferation of colorectal epithelial cells, and lead to colorectal cancer, and enough calcium can combine with bile acid and free fatty acid, thus reducing the risk of colorectal cancer.

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suggest that milk, yogurt, cheese and other dairy products are not only rich in calcium, but also have high absorption and utilization rate, which are the best sources of calcium. Bean curd, dried bean curd, bean skin and other bean products also have high calcium content, which should be eaten often. In addition, cabbage, broccoli, rape and other green leafy vegetables are also good sources of calcium.

carotene

anti cancer nutrients carotene

breast cancer

from green leafy vegetables, orange fruits and vegetables

carotene mainly includes alpha carotene, beta carotene and gamma carotene, all of which are Pro Vitamin a (can be converted into vitamin A in human body). The higher the level of carotene in the blood, the lower the risk of breast cancer, the study found. A survey from all over Europe shows that women who often eat carotene rich foods have a 40% – 60% lower risk of breast cancer associated with estrogen receptor, which accounts for nearly one third of the total breast cancer cases.

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suggest that carotene mainly comes from orange yellow fruits and vegetables such as carrot, pumpkin, mango, corn and orange, and dark green leafy vegetables such as spinach and amaranth. What is gratifying is that compared with vitamin C and other nutrients, carotene has better heat resistance, and only a small amount of oil can make it fully absorbed. Dietary fiber

is a kind of carbohydrate which can not be digested and absorbed by human body. Dietary fiber can increase the amount of feces, dilute the carcinogens in the colon, which is not conducive to the growth of cancer cells, thus reducing the incidence of colon cancer. There are also surveys that show that women who eat more refined white rice and white flour are more likely to suffer from breast cancer than those who eat a large proportion of whole grains. The reason may be that dietary fiber can help reduce blood glucose response, and the more intense the postprandial blood glucose response, the greater the risk of breast cancer.

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suggest that whole grains, beans, fruits and vegetables and potato are the main sources of dietary fiber, and the content of nuts and seeds is also high. The more finely processed food, the less dietary fiber content, such as white bread, cake, biscuit, etc. Now there are coarse cereals, biscuits and other foods that are rich in dietary fiber, but they often have high fat content. The best way to get dietary fiber is from natural food. But dietary fiber is not more beneficial, if excessive intake will interfere with the absorption of other nutrients. Some special groups, such as malnutrition, patients with gastrointestinal diseases or gastrointestinal surgery, and elderly patients with constipation, should not eat too much.

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lycopene

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are the main pigments in mature tomato, which have strong antioxidant effect. A study by Harvard University found that lycopene has a certain relationship with prostate cancer. The risk of prostate cancer can be reduced by 21% when men take lycopene (more than 6.5 mg per day) in their diet. In addition, high lycopene intake also reduced the risk of esophageal, oral, gastric, colorectal and lung cancer.

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suggest that lycopene mainly exists in tomato, watermelon, grapefruit and guava, and a small amount in carrot, pumpkin, plum, mango, pomegranate and other fruits and vegetables. Generally speaking, the higher the maturity of tomato, the higher the content of lycopene. It should be noted that lycopene is a kind of fat soluble nutrient, and its absorption and utilization rate is higher when it is combined with oil. Therefore, the cooked tomato is better. It is a good choice to make tomato scrambled eggs and tomato soup.

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anti cancer nutrients organic sulfide

prevent cancer, gastric cancer and other cancers

from Cruciferae

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