The occurrence of cancer is closely related to diet. Research (Science, January 1997) shows that 30% of cancer deaths are caused by improper diet.
Dietary animal fats (mainly saturated fats), too few fruits and vegetables, unscientific cooking methods, unreasonable eating methods, and excessive foods are the most important carcinogenic factors. The diet is mainly related to the occurrence of colon cancer, rectal cancer, breast cancer, prostate cancer, gastric cancer, snus cancer, esophageal cancer, and lung cancer.
Some of the dietary factors related to carcinogenesis have now been basically confirmed: (Under the limits of research methods, such as animal experiments, it is not possible to use humans for cancer development experiments. Some carcinogenic factors have not yet been finally confirmed for human carcinogenesis, but they are The carcinogenicity of experimental animals has been confirmed
1. Drinking
Prolonged drinking may be an important cause of esophageal and cardiac cancers.
It is generally believed that drinking has a close relationship with tumor development at eight sites, namely tongue cancer, oral cancer, throat cancer, esophageal cancer, gastric cancer, pancreatic cancer, lung cancer and kidney cancer.
Some studies have pointed out that there is a synergistic carcinogenic effect between drinking and smoking.
2. Eat too hot food
Some bad dietary habits, such as eating very hot (hot) foods, eating too fast, can damage the esophageal mucosa, produce chronic inflammation, and increase the risk of esophageal and gastric cancer.
3. Pesticide residues
Common pesticides include organic phosphorus, organochlorine and carbamate insecticides. Organochlorine pesticides mainly include DDT and HCH, which have relatively high carcinogenicity and have been confirmed to accumulate in the human body. Therefore, China and most countries have banned their use.
However, surveys have shown that, in 2000, the DDT intake per person per day in China's residents was very small, but the HCH intake was 3.11 ug, which increased compared with 1990, mainly due to the contamination of aquatic lindane.
Because the organophosphorus pesticides that are widely used today have significantly less time in food and environment than organic chlorine, they are less likely to be associated with human cancers.
4. Hazardous metals
Lead, arsenic and cadmium may have carcinogenic effects on the human body. They mainly come from air pollution, water pollution, soil pollution, and pollution from food processing. They are the most difficult environmental pollutants in foods. In general, fish, seafood, aquatic products, high-fat meats, certain vegetables, foodstuffs, and the like contaminated with industrial waste water, waste gas, and waste residue.
5. High salt meal
Epidemiological surveys have found that high salt intake can increase the risk of developing gastric cancer. Salt itself is not a carcinogen, but a high-salt diet can cause damage to the gastric mucosal protective layer, causing chronic inflammation reactions and precancerous lesions, and does not promote Helicobacter pylori infection. Controlling dietary salt intake helps prevent stomach cancer.
6. Environmental Estrogens
Environmental estrogens mainly include diethylstilbestrol, polychlorinated biphenyls and dioxins. Estradiol is one of the growth-promoting hormones commonly used in animal feed and is also a sex hormone.
PCBs and dioxins are the most common environmental pollutants, mainly concentrated (enriched) in animal fat tissue. Therefore, eat less fat-rich meat, such as fat, pork, fat, ribs, high fat steak, fat duck, fat goose and so on.
7. Synthetic pigments
Synthetic pigments are mostly synthesized from coal tar or aromatic hydrocarbons such as benzene, toluene, and naphthalene. Most of them are harmful, and they are strictly limited by various countries.
The currently available synthetic pigments in China include amaranth, lemon yellow and indigo. Given that synthetic pigments may have a carcinogenic effect on the human body, they should be used as little or as little as possible.
8. Hang white block
The chemical name of the hanging white block is sodium formaldehyde sulfoxylate, which belongs to the industrial bleaching agent and does not belong to the food additives that are allowed to be used. However, lawbreakers added it to processed foods such as yuba and rice noodles.
The Diabetic block has been listed as a possible carcinogen by the National Cancer Research Institute (IARC).
9. Acrylamide
Starchy foods tend to produce acrylamide under high temperature (>120°C) cooking. The results of animal experiments show that acrylamide is a possible carcinogen.
According to Bulletin No. 4 issued by the Ministry of Health in 2005, fried foods such as French fries, potato chips, instant noodles, and fritters, and baked goods such as instant coffee and breakfast cereals contain more acrylamide.
Therefore, starchy foods should be cooked as much as possible by steaming, cooking, etc., and eating habits like deep-fried and high-fat foods should be changed.
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