Digestive system cancer prevention: the occurrence of cancer and the environment, living conditions related. Environment, including natural environment and personal work, life, living environment; good life, including lifestyle, nutrition, certain habits. The so-called reduction of cancer-causing factors, from the following aspects.
(A) of the living environment
In human life or work, the more easily accessible to more positive but there are many carcinogens. Physical factors, such as more than a certain dose of radiation exposure. More chemical aspects. One is from biological toxins. The most commonly encountered is a variety of fungal toxins, such as aflatoxin, Island penicillin. A from drugs (such as Sex hormones), chemotherapy drugs (such as cyclophosphamide cool plastic), analgesics (such as phenacetin) and so on. The other from some of the work environment, such as asbestos, benzene, aniline, chromium compounds, mustard gas, coal tar, vinyl chloride and so on. Protection of these areas and reduce exposure is an important aspect of cancer prevention. In addition, certain factors, itself does not directly cause cancer, but is closely related with cancer incidence, or risk factors known cause of cancer, like smoking, excessive fat in foods, eating too little fiber and so on. For large environments, it is generally worried about air pollution and water pollution. According to foreign data, analysis of the highly industrialized areas and less industrialized regions, found that highly industrialized areas no significantly higher incidence of cancer. And water pollution, in addition to high incidence of liver cancer, liver cancer found that the incidence of drinking water is much higher than those drinking well water, the incidence of other cancers, there has not been reported.
(B) Lifestyle
In a variety of cancer-causing factors, the most worthy of attention, or way of life. Including many aspects of life, the key is to diet and smoking. Both of which with the most closely related to the digestive system cancer.
Digestive system cancer prevention 1. Smoking
Relationship between smoking and lung cancer is more clear, but the relationship between smoking and cancer, digestive tract, can not be ignored. Smoking and the incidence of oropharyngeal cancer have a certain relationship. The incidence of esophageal cancer in some areas and local people are chewing tobacco habit. Liver cancer, our data show that smoking is a secondary factor. Recent years, many scholars believe that the incidence of smoking and cancer is also related to film.
Digestive system cancer prevention 2. Drinkers
The occurrence of drinking and esophageal cancer, the greater the alcohol consumption, the higher the risk of occurrence. Drinking with smoking, the more dangerous. Drinking alcoholic liver cirrhosis can be formed, and alcoholic liver cirrhosis and liver cancer. Many scholars believe that the relationship between drinking too much and cancer, alcohol itself may have some tumor promotion, or a wine contains some of the cancer-causing impurities. Excessive drinking can lead to nutritional deficiencies, also affect the permeability of mucous membrane, which is easy to carcinogens by the work.
3. The lack or imbalance of nutrients
For most people, or for most non-smokers, people who do not drink, dietary factors, the most critical factor is the lack of nutrition or unbalanced.
(1) Protein: Protein content of the relationship between the level and occurrence of cancer is not clear, our data indicate that insufficient intake of protein, and esophageal cancer, gastric cancer, but not with liver cancer also have a certain relationship. Because protein and fat often exist, too much fat intake caused by cancer, is also associated with the protein, there is no evidence.
(2) Fat: Animal experiments show that high-fat diet, can induce or more of certain carcinogens induced colon cancer, liver cancer, pancreatic cancer and so on. Human studies also suggest that high fat intake and colon cancer, rectal cancer, pancreatic cancer was significantly related.
(3) of sugar or total calories: Animal experiments show that limit sugar content, reducing the total calorie intake, can significantly reduce the occurrence of cancer. American Cancer Society, told the men and women, the relationship between body weight and long-term observation of cancer, the cancer found a high incidence of overweight, such as gallbladder cancer and so on.
(4) Vitamins: Vitamin A, structure and function of epithelial cells play an important role. Vitamin A deficiency causes epithelial cell damage, and oropharyngeal cancer, the incidence of esophageal cancer have a certain influence of vitamin C in the body a variety of metabolic processes, to protect the integrity of the stromal cells play an important role and enhance immune. Vitamin C also has antioxidant, can block the formation of nitrite rubber. A lack of vitamin c, gastric cancer, colorectal cancer affects both the incidence
(5) trace elements: lack of bowl with copper deficiency on the formation of a variety of cancer have a certain influence.
Digestive system cancer prevention 4. Diet infertility care applications possible carcinogen
We provide food, in addition to containing the above nutrients, but also may contain a variety of potentially carcinogenic substances. Some of their plants contain toxins, such as possession of food. Possession of regular consumption of food groups, a higher incidence of esophageal cancer may be related to benzene in the possession of oxalic acid on food. Another example is contained in cycad cycads element, can cause liver cancer in rats. Contaminated, such as contamination by aflatoxin corn, peanuts, after eating can cause liver cancer. High incidence of esophageal cancer, according to the survey, food often by Geotrichum candidum, Fusarium aflatoxin contamination. At the same time, pesticide contamination of food can not be ignored. In addition, nitrite rubber compounds in a variety of animals can cause cancer, deserves attention. Benzo polycyclic aromatic compounds with the class, from factories, motor vehicle exhaust, but also a strong carcinogen. High temperature baking foods, often there benzo wander class should pay attention to prevention.