There are four main carcinogens: aflatoxin, nitrosamines, dioxins and nicotine.
According to the different carcinogenic effects on humans and mammals, carcinogens can be divided into confirmed carcinogens, suspected carcinogens and potential carcinogens. It has been confirmed that carcinogens have carcinogenic effects through animal experiments and population epidemiological investigations. It is suspected that carcinogens cause cancer in animals, but they also cause cancer in many animals, especially primates closely related to humans. However, at present, only a few clinical reports have carcinogenic effects on human beings, and they have not been confirmed in population epidemiological surveys. Potential carcinogens are carcinogenic to animals, but there is no data showing that they are carcinogenic to humans, but they are carcinogenic to humans.
From 198 1, Wei *** urger and Williams put forward the classification table of carcinogens mainly according to their action characteristics, and later revised it several times. Carcinogens can now be divided into three categories.
Genotoxic carcinogen
Non-genotoxic carcinogen
Undetermined genotoxic carcinogen
When barbecue meat, a large number of carcinogens-polycyclic aromatic hydrocarbons (PAHs) will be produced. This is the earliest known chemical carcinogen, including benzopyrene, tetramethylbenzene and so on. The most harmful is benzopyrene, which can enter the digestive tract through barbecue or enter the respiratory tract through barbecue smoke. Benzopyrene will accumulate in the body and can induce cancers such as gastric cancer and intestinal cancer. Another carcinogen, heterocyclic amines, can cause breast cancer and colon cancer in animal experiments. Relevant data show that women who often eat barbecue are twice as likely to develop breast cancer as women who don't like barbecue food. There is another carcinogen in barbecue food-nitrosamines. Studies at home and abroad have confirmed that no animal can tolerate nitrosamines without causing cancer. Nitrosamines are produced in the pickling process of kebabs before roasting. If the curing time is too long, nitrosamines are easily produced. Especially in the unsanitary individual barbecue stalls on the street, in order to make inferior meat taste tender, "tender meat powder" will be added excessively, and tender meat powder generally contains nitrite. This kind of mutton kebab marinated with tender meat powder is easy to cause nitrite poisoning if eaten too much.
Excuse me, is there any carcinogen in coffee? 65438+ 0-2 cups a day, as long as the amount is moderate, it will not cause cancer.
It is reported that drinking instant coffee often has cancer risk. Because instant coffee contains a lot of protein, after the necessary high-temperature barbecue procedure, the amino acids in it will react with sugar to generate acrylamide, so it is carcinogenic.
However, in some coffee consuming countries, people consume about 250-600 milligrams of caffeine every day on average. After repeated scientific research and analysis, this dose has no side effects on human body. The caffeine content of a cup of instant coffee (about 150 ml) is generally about 60 mg, so drinking 4- 10 cups of instant coffee every day will not be excessive.
What foods contain carcinogens? Smoked, burnt, fried and other foods will contain carcinogens.
What oil causes cancer? Arowana, a fish that brings disaster to the country and people! After reading the following words, if Arowana is guilty, there is no light sentence at all!
First of all, the success of Arowana depends on a global genetically modified soybean industry chain! Arowana has planting bases of genetically modified soybeans and rapeseed oil in South America and other places, and makes money through international futures trading. Then, these genetically modified foods are transported to China to be processed into oil cakes and sold to feed enterprises in China. After making money from these two links, the remaining by-products-genetically modified soybean oil and genetically modified rapeseed oil-were dumped to thousands of cities in China. However, consumers in China never read the ingredient list of Arowana edible oil! Genetically modified agricultural products are absolutely forbidden to people in Europe and Japan, because there are unpredictable risks to our future generations! The harm of eating genetically modified food can only be realized in children and grandchildren! Donkeys and horses mate to produce mules, which lose their fertility. Think about the harm of genetically modified food!
Second, the cost of genetically modified food for Arowana is extremely low. Dumping in China completely destroyed the soybean industrial chain of China agriculture, and the original non-GM soybeans in Northeast China were basically destroyed. Now the black land has basically fallen, and all the genetically modified soybeans have been planted! The soybean milk we drink every day is basically made of genetically modified soybeans!
Three, arowana soybean oil is chemical leaching method! The advantage of this process is that the oil yield is high, and enterprises can reduce costs. The disadvantage is that two substances are produced: lead and mercury residues and trans fatty acids! These two substances are strong carcinogens, second only to Jinhao tea oil! 70% of the base oil of Arowana blended oil is genetically modified chemically leached oil, but consumers never look at the ingredient list and are kept in the dark by the fancy concept of Arowana, including the new variety of Arowana "deep sea fish oil blended oil", which is essentially "chemically leached non-genetically modified soybean oil"!
Arowana, a despicable brand, brings disaster to the country and people. The traitors in China are endangering the country and people, the health of the people in China and the soybean industry chain in China! This is the meanness of this foreign brand! Do you still buy Arowana Blended Oil? Do you still dare to eat? Eating it will make you infertile and make our children childless.
What level of carcinogen is smoke? Smoke is a class A carcinogen. At present, the US Environmental Protection Agency has declared the smoke in the air as a class A carcinogen. According to the figures published by the World Health Organization and other departments ... this is the result of the interaction between nicotine, phenylpropionic acid, harmful metals and other carcinogens in tobacco and promoters.
How does Telunsu contain a suspected carcinogen? The General Administration of Quality Supervision, Inspection and Quarantine requested the Inner Mongolia Quality Supervision Bureau to order Mengniu Company to ban the addition of OMP and IGF- 1 in Telunsu milk. Famous scholars believe that the high content of IGF- 1 will increase the risk of various cancers. Mengniu Group has submitted relevant materials to the Ministry of Health for approval.
The National Business Daily was informed yesterday that the AQSIQ sent a letter to the Quality and Technical Supervision Bureau of Inner Mongolia Autonomous Region on February 2, asking it to order Mengniu Company to ban the addition of OMP in Telunsu milk.
The official made a statement about "OMP" for the first time.
In this official letter, the General Administration of Quality Supervision, Inspection and Quarantine put forward the supervision opinion: "In view of the fact that the safety of OMP has not been clearly defined in China at present, IGF- 1 substance is not a traditional food raw material, nor has it been included in the use standard of food additives. If the above substances are artificially added, it does not conform to the provisions of existing laws and regulations. Please order Mengniu Company to prohibit the addition of the above substances and notify Mengniu Company. If the company thinks that OMP and IGF- 1 are safe, please provide relevant materials directly to the Ministry of Health according to legal procedures and apply to the Ministry of Health for a decision on whether to allow OMP and IGF- 1. "
This is the first official statement of Mengniu "OMP" incident. It is understood that there have been problems about Mengniu Telunsu milk containing OMP and IGF- 1 in newspapers before. At the beginning of this year, the Quality and Technical Supervision Bureau of Inner Mongolia Autonomous Region submitted an inspection report on Mengniu Telunsu milk to the AQSIQ. On February 2, AQSIQ sent a letter to put forward the above regulatory opinions.
Mengniu: It needs to be verified with the technical department.
Director Chen of the Supervision Department of Inner Mongolia Quality Inspection Bureau confirmed to the National Business Daily yesterday that Mengniu Group has submitted relevant materials to the Ministry of Health for approval. "I don't know if there is any harm, but the company has done experiments to prove that there is no problem with the new OMP in Telunsu, but everything must be listened to by the Ministry of Health." Director Chen said.
In addition, Director Chen told the reporter that according to the requirements of the General Administration, the "Telunsu" produced by Mengniu after February 2 no longer contains OMP substances.
The reporter contacted Zhao, spokesman of Mengniu Group twice last night. She said she was in a meeting outside. I don't know this matter, so I need to check with the technical department.
When investigating in a large supermarket in Beijing, the reporter found that the Telunsu OMP milk produced on February 3rd has been put on sale. At the same time, the production date is before February 2, and Telunsu is also on sale.
No carcinogen was found in Nestle products in China. But to be on the safe side, don't eat it yet, and wait until you are completely sure.
"Family carcinogen" In daily life, cooking and heating are inevitable, and most people refuse to give up fried food. What can be done to minimize the harm of carcinogens such as benzopyrene? Here is a fulcrum for everyone.
1. The frequency of eating fried and smoked food is limited. If you really like it, make a rule for yourself. For example, only eat once or twice a month. Eat fried food, but also control the amount. If one dish in a meal is stir-fried, other dishes should be light and less oily, preferably cold, steamed and stewed.
2. Stay away from all frying and smoking stalls. If you really want to eat, buy it and go at once. Don't stay in front of the booth. When you see this stall on the road, you should hold your breath and run to avoid inhaling carcinogenic smoke.
3. When eating barbecue outside, you should choose a shop with good ventilation conditions, and don't smell smoke when eating. Don't burn the barbecue until it is cooked.
When eating out grilled fish, tell the waiter not to burn the fish. The blackened area of the baking paste must be thrown away and not soaked in the oil on the plate, so as to avoid the carcinogen spreading into the oil.
When cooking barbecue and grilled fish at home, you should use an oven that can control the temperature, and don't bake it directly on the gas stove or electric stove.
6. If you cook fried food at home, try to control the oil temperature during frying and shorten the frying time. Not too dark after frying, just light yellow. The higher the oil temperature and the darker the color, the more toxic substances and carcinogens will be produced. When frying, the temperature should be controlled at 160- 180 degrees. At this time, there is less oil smoke, and the food will foam a lot after being thrown in, but it will not change color immediately. If there is a lot of smoke, or the food changes color too quickly, it means the temperature is too high.
7. If you occasionally fry something at home, try not to use oils with too many unsaturated fatty acids such as soybean oil, corn oil and sunflower seed oil, but palm oil or animal oil is the most ideal. Without these oils, peanut oil and rice bran oil are slightly better
8. When frying food, clean up the impurities in the oil in time. When frying food, there are often some small dregs or chips left in the pot. After repeated frying for a long time, they will turn black and paste, producing a lot of harmful substances, which will be harmful to health if they are dissolved in oil or stained on the surface of food. Therefore, when frying food, prepare a small hedge or colander with fine mesh to remove impurities in the oil in time.
9. Never reuse frying oil. When frying repeatedly, the output of carcinogens will increase sharply, and trans fatty acids and toxic oil oxidation products will be produced.
10. After frying the first dish, be sure to wash the pot, and then fry the second dish. Oil and food residues attached to the surface of the pot will produce a variety of harmful substances including carcinogens after reheating. Many years ago, it was reported that the boiler scale contained benzopyrene.
1 1. Don't let the oil smoke for a long time. Oil fume contains many toxic substances, especially when the temperature is too high, it will contain more benzopyrene, which will increase the risk of lung cancer after inhalation. Turn on the range hood before cooking, and don't turn it off after eating. It's best to keep it for more than ten minutes and smoke all the fumes in the kitchen.
12. If you must eat smoked and fried food, don't mix it with other high-protein foods, but mix it with green leafy vegetables, raw vegetables, beans and coarse grains. Green leafy vegetables contain a lot of chlorophyll and antioxidants, which can reduce the mutagenicity of carcinogens in fried foods to some extent.
If possible, it is best to avoid frying and smoking as much as possible in the family, and use cooking, oven baking and water frying instead. For example, there are many semi-finished products wrapped in fried powder in the supermarket, such as popcorn, chicken chops and shrimp cakes. When processing this kind of food, we might as well abandon frying and try water frying. Specifically, put a little oil in the bottom of the pot, add a spoonful of water and steam the ingredients. After the water evaporates, a little oil will fry the bottom of the ingredients thoroughly. The food fried in water is crispy outside and tender inside, and tastes as good as before, but the fat content is not high and the carcinogen content is very low.
Why is it so convenient for the human body to treat precancerous lesions into carcinogens?