Obesity and alcohol are on the cancer list

As we all know, cancer is a very complex disease Countless scientists and doctors around the world have studied it for many years, but their understanding of it is still limited So far, there is no clear conclusion about the cause of cancer and the inducement of cancer According to the joint expert group of the World Health Organization and the food and Agriculture Organization of the United Nations, the role of diet in the occurrence of cancer in developed countries is about 30%; in developing countries, it is about 20% This ratio makes diet the second leading cause of cancer after smoking The journal food guide, sponsored by the Chinese Academy of inspection and quarantine, points out that according to the results of scientific research, there is sufficient evidence to prove that obesity, alcoholism, aflatoxin and Chinese style saltfish have carcinogenic ability; while some evidence is not so sufficient, it is likely to be the diet of carcinogenic factors According to the American Association for cancer research, all red meat, such as pork, beef and mutton, increases the risk of cancer The American Association for cancer research recommends eating about 500 grams of red meat a week; for those stored meat, they conclude that eating 50 grams a day increases the risk of colon cancer by 21% It should be noted that the risk of these cancers is not necessarily related to the additives and preservatives that people pay close attention to Food Guide magazine points out that the main problem lies in the preservation of salted fish, bacon and other foods in the process of salting, they may produce dimethylnitrite, which will be converted into carcinogenic substance dimethylnitrite in the body If you eat the traditional Chinese pickled "natural" food that has been handed down for thousands of years, these problems will occur Aflatoxin is produced by Aspergillus flavus, which grows from moldy grains and peanuts According to the epidemiological survey, liver cancer is often found in warm, humid areas where Aspergillus flavus is easy to grow, especially in areas where corn and peanuts are abundant Wang Xingguo, associate professor of the Second Affiliated Hospital of Dalian Medical University, said that aflatoxin is a mycotoxin produced by flavus, one of the strongest carcinogens, which mainly damages the liver, stomach and esophagus, and has strong carcinogenic, teratogenic and mutagenic effects When purchasing and storing food, peanuts, soybeans and other foods, we should pay attention to avoid mildew Experts recommend healthy lifestyle the World Health Organization and FAO joint expert group recommend a lifestyle to reduce cancer incidence: keep the weight in a reasonable range [weight (in kg) divided by the square of height (in meters), between 18.5-24.9], and avoid some weight gain of more than 5 kg in adulthood; exercise regularly; Avoid drinking, if you really want to drink, the amount of alcohol per day should not exceed 20 grams; eat less Chinese salt fish, especially in childhood, salt and salted food should also eat less; reduce the chance of aflatoxin in food, such as moldy peanuts; eat at least 400 grams of fruits and vegetables per day; eat less stored and processed meat; do not eat very hot food or drink Wang Xingguo said that if the food is overheated, it will damage and stimulate the epithelium of esophageal mucosa, and if it is stimulated for a long time, it will induce tissue malignant change The cancer of digestive tract in Chinese is significantly higher than that in Westerners, which is related to Chinese people's preference for hot food and hot soup, such as vegetable soup and batter, while Westerners tend to drink juice and other cold drinks The American Association for cancer research has made it clear that no single food can protect people from cancer Their recommended "cancer fighting" recipe is: "more than two-thirds of food ingredients come from plants, namely vegetables, fruits, whole grains and beans." Wang Xingguo specifically mentioned that it is a misunderstanding to say that red wine can fight cancer and prevent cardiovascular diseases In 1989, a World Health Organization report explained the famous "French paradox" The so-called "French paradox" means that although epidemiological investigation shows that although the French love high fat foods such as cheese, their incidence rate of coronary heart disease is lower than that of other western countries with the same high fat diet The reason is that French people often drink red wine The researchers concluded that a natural compound called resveratrol played a protective role in the wine In 1997, science published a research report on "resveratrol for cancer prevention" So far, resveratrol has been reported to prevent cardiovascular disease, anticancer, antioxidant, antibacterial, liver protection, immune regulation, radiation protection, estrogen like effects Wang Xingguo stressed that although people's attention and Research on resveratrol started from red wine, and resveratrol does exist in red wine, the current experimental research on the health benefits of resveratrol does not directly "belong" to red wine In fact, the content of resveratrol in common red wine is not high, generally 1.5-3.0 mg / L According to the US recommendations on resveratrol dietary supplements, it is advisable to take 4 mg of resveratrol every day If it is converted into ordinary red wine, it is equivalent to drinking 1300-2600 ml of resveratrol every day, which is obviously unrealistic Resveratrol has many health care effects, but it needs to reach a certain dose to play out It is difficult to achieve this dose by drinking red wine alone "Red wine contains alcohol, and the harm of alcohol to health cannot be avoided No matter it comes from white wine, beer or red wine, alcohol is always harmful." Therefore, Wang Xingguo suggested that for those who must drink, red wine is the best choice; but for those who do not drink, the best way is to continue not to drink, rather than drink some red wine.