Cancer is getting closer and closer to us, and the seriousness of cancer is enough to attract everyone’s attention. The causes of cancer are complex and related to many factors. Diet has a great relationship with cancer, and there are many cancers that come from eating.
I. Esophageal cancer has been investigated and researched, and the following points have been found.
1.Lack of vitamin A, vitamin C and vitamin E.
2.Lack of certain trace elements, such as molybdenum, zinc, selenium, etc.
3.Eating pickled and moldy food. Carcinogenic substances nitrosamines can cause a variety of cancers, among which, dimethylnitrosamine, diethylnitrosamine and methylbenzylnitrosamine can be found in cured meat and fish, and crude fish sauce. In addition, in dried radish, cornmeal, sauerkraut and some moldy food, even sausage, beer are also more or less present. Moldy food in addition to nitrosamines and mycotoxins, these toxins themselves can cause cancer, but also with nitrosamines have a synergistic carcinogenic effect.
4.The incidence of esophageal cancer will increase significantly due to drinking and smoking.
According to domestic and foreign epidemiological studies, the occurrence of gastric cancer may be related to the following factors.
1, eat smoked food: food in the process of smoking will produce a large number of polycyclic aromatic hydrocarbon compounds, which contain strong carcinogenic substances such as benzo(a)pyrene, which can penetrate the whole food. In the process of smoking, proteins are decomposed at high temperatures, especially when scorched, to produce carcinogenic ingredients.
2. High nitrate and nitrite content in drinking water and food. Nitrate and nitrite may combine with amines in human stomach to form nitrosamines, which are very strong carcinogenic substances.
3, like to eat pickled food.
4.Eating moldy food: It is found that the food and food in areas with high incidence of gastric cancer are heavily contaminated with mold, and even in the gastric juice of gastric cancer patients, mold and its toxins are detected.
5.Drinking alcohol: alcoholism can damage gastric mucosa and cause chronic gastritis. Alcohol can promote the absorption of carcinogenic substances and damage and weaken the detoxification function of liver.
The relationship between the occurrence of liver cancer and diet is as follows.
1, aflatoxin contamination of food: the geographical distribution of liver cancer in China is basically consistent with the distribution of aflatoxin contamination, and the morbidity and mortality of liver cancer is also high in areas where food, oil and food are seriously contaminated by aflatoxin.
2. Transmission of hepatitis B virus: About 10% of our population has been infected with hepatitis B virus. Due to poor eating habits and dietary hygiene, hepatitis virus is mainly transmitted to healthy people through diet and unsterilized tableware. Some patients with chronic hepatitis will develop liver cancer.
3.Pollution of water source: The degree of drinking water pollution is positively correlated with liver cancer incidence, suggesting that polluted water contains carcinogenic and carcinogenic substances, such as blue-green algae toxin, humic acid, etc.
4.Alcoholism: Alcoholism obviously damages the liver, which can lead to malnutrition and liver stiffness, on the basis of which liver cancer can develop.
Four, colon and rectal cancer.
1, high-fat diet: people who eat high-fat diet have higher incidence of colon and rectal cancer than those who eat low-fat diet, which has been confirmed in animal experiments.
2.Insufficient dietary fiber: The incidence of colon and rectal cancer in countries with more plant fiber in the diet, such as Africa, Finland, Japan and China, is significantly lower than that in Europe and America.
3.Other factors: Eating more foods rich in vitamin A can reduce the occurrence of colorectal cancer. People who drink more beer or drink both beer and other alcohol have a higher incidence of colorectal cancer.
In addition, many data prove that a high-fat and high-calorie diet is positively correlated with the occurrence of breast cancer, and lung cancer patients are often deficient in vitamin A and selenium. It has been reported that high fat diet may be associated with the occurrence of endometrial cancer, ovarian cancer, prostate cancer and gallbladder cancer. Throat cancer and oral cancer are related to smoking and alcohol abuse, thyroid cancer is related to the lack of iodine in the diet, and nasopharyngeal cancer is related to the pollution of nitroso compounds (such as nitrosamines) in the diet.
V. Arrangement of cancer prevention foods.
According to the latest report, one out of every three cancer deaths is caused by dietary habits. In order to help people avoid this kind of cancer, experts not long ago through the analysis of more than 40 kinds of vegetables anti-cancer ingredients and experimental cancer suppression experiment results, from high to low discharged 20 kinds of vegetables with significant tumor suppression effect: cooked sweet potato (98.1%), raw sweet potato (94.4%), asparagus (93.7%), cauliflower (92.8%), cabbage (91.8%), cauliflower (90.8% ), parsley (83.7%), eggplant skin (74%), bell peppers (55.5%), capers (46.5%), goldenrod (37.6%), carrots (35.4%), mustard greens (32.9%), potherb mustard (29.8%), tomatoes (23.8%), shallots (16.3%), garlic (15.9%), cucumbers (14.3%), cabbage ( 7.4%).