How are carcinogens classified? What are the carcinogens in each class?

First-grade carcinogens

There are four first-grade carcinogens: aflatoxin, nitrosamines, dioxins, and nicotine.

Carcinogens can be divided into confirmed carcinogens, suspected carcinogens and potential carcinogens according to the different carcinogenic effects on humans and mammals. Confirmed carcinogens have been recognized as carcinogenic through animal experiments and population epidemiological investigations. Suspected carcinogens show carcinogenic effects in animals, and in a variety of animals, especially in primates that are closer to humans, but there are only individual clinical reports of carcinogenicity in humans, which have not yet been confirmed in population epidemiological investigations. Potential carcinogens are carcinogenic to animals, but there is no information that they are carcinogenic to humans, only the possibility of carcinogenicity in humans.

Since 1981, Wei *** urger and Williams, etc., mainly in accordance with the role of carcinogenic characteristics of carcinogens proposed by the classification of carcinogens table, and later many times to modify the table. It is now believed that carcinogens can be divided into three major categories.

Genotoxic carcinogens

Non-genotoxic carcinogens

Undetermined genotoxic carcinogens

When grilling meat, how do carcinogens arise

When grilling meat over an open fire, a large number of carcinogens will be produced - polycyclic aromatic hydrocarbons (PAHs), which were first recognized, and are still the most common carcinogens. The earliest recognized and still the most important and the largest number of chemical carcinogens, including benzo(a)pyrene, tetramethylbenzene, etc., among which the most harmful one is benzo(a)pyrene, which can enter into the digestive tract through barbecuing meat, and also enter into the respiratory tract through the smoke of barbecuing meat. Benzo(a)pyrene accumulates in the body and can induce stomach cancer, intestinal cancer and other cancers. Heterocyclic amines, another carcinogen, can cause breast cancer and colon cancer in animal experiments. Some relevant data show that women who often eat barbecue, the chance of breast cancer is two times higher than women who do not like to eat barbecue food. Barbecue food also exists in another carcinogen - nitrosamines. Domestic and international studies have confirmed that no animal has been found that can tolerate nitrosamines without causing cancer. Nitrosamines arise from meat skewers in the marinating process before grilling, if the marinating time is too long, it is easy to produce nitrosamines. Especially unhygienic street individual barbecue stalls, often in order to make the poor quality meat taste tender, will be too much new "tenderizing powder", and tenderizing powder generally contain nitrite, if too much consumption of this with tenderizing powder marinated meat skewers, it will be easy to cause nitrite poisoning

Please ask the coffee has carcinogens

Daily

1-2 cups a day, as long as the right amount is not carcinogenic.

Some reports show that drinking instant coffee often has a cancer risk. Because instant coffee contains a lot of protein, after the necessary high-temperature grilling program, the amino acids and sugar will react to produce acrylamide, so there is a cancer risk.

But in some coffee-consuming countries, people consume about 250-600 milligrams of caffeine per day on average. After repeated scientific studies and analysis, this dose has no side effects on the human body. The caffeine content of a cup of instant coffee (about 150 milliliters) is generally about 60 milligrams, so drinking 4-10 cups of instant coffee a day is not excessive.

What foods contain carcinogens?

Smoked, battered, and fried foods all contain carcinogens.

What oils have carcinogens?

Goldfish, a scourge of a fish! After reading the following text, if we say that the gold dragon fish sinned a lot, it is not a light sentence at all!

First of all, what Golden Dragonfish relies on to succeed is a global GMO soybean industry chain! Golden Dragonfish owns GM soybean and canola oil planting bases in South America and other places, and makes money through international futures trading, and then ships these GM foods to China to be processed into oil cakes and sold to Chinese feed companies, and after earning money in both of these segments, the remaining by-products, GM soybean oil and GM canola oil, are dumped into millions of Chinese *** Markets, however, Chinese consumers never look at the ingredient list of Golden Dragonfish cooking oil! Genetically modified agricultural products are absolutely banned for consumption by the people in Europe and Japan because of the unpredictable risks to the bodies of our children and grandchildren! The harmful effects of eating genetically modified foods can only be realized in the bodies of our children and grandchildren! Donkeys and horses mate to produce mules, and mules lose their fertility, so you ponder how harmful genetically modified foods can be!

Secondly, the extremely low cost of GM foods from Dragonfish, dumped in China, completely destroyed the soybean industry chain of Chinese agriculture, the original non-GM soybeans in the Northeast were basically destroyed, and now basically all of the black land has fallen, and all of it is planted with GM soybeans! The soy milk we drink every day is basically made from GMO soybeans!

Third, the Golden Dragon Fish soybean oil is chemical leaching method! The advantage of this process is that the oil rate is high, companies can reduce costs, the disadvantage is to produce two substances: lead and mercury residues and trans fatty acids! These two substances are strongly carcinogenic, no less than Jinhao tea oil! And 70% of the base oil of the blended oil is GMO chemically leached oil, however, consumers never look at the ingredient list, and are kept in the dark by the fancy concepts of the company, including the new varieties of the "Deep Sea Fish Oil Blended Oil", which is still essentially "chemically leached non-GMO soybean oil" as the main ingredient! The main ingredient is "chemically leached non-GMO soybean oil"!

Jinlongyu, a despicable big brand, wreaking havoc on the country and the people, the Chinese traitors are wreaking havoc on the country and the people, killing and maiming the people's bodies, and destroying the soybean industry chain in China! This is how despicable this foreign brand is! Do you still buy the Golden Dragon Fish blended oil? Do you still dare to eat it? If you eat it, you will not be able to produce offspring, and it will make our offspring extinct.

How many levels of carcinogens is tobacco smoke?

Tobacco Haze is a Class A Carcinogen The U.S. Environmental Protection Agency currently declares airborne tobacco haze to be a Class A carcinogen. According to figures published by the World Health Organization and others... This is the result of the combined action of nicotine, phenylpropanoid castor, harmful metals and other carcinogenic and cancer-promoting substances **** in tobacco

What's the deal with Trenbolone containing suspected carcinogens?

The AQSIQ asked the Inner Mongolia Quality Supervision Bureau to order Mengniu to prohibit the addition of OMP and IGF-1 substances to the milk of "Terensu". The famous scholar, Ark, believes that a high content of IGF-1 will increase the risk of many types of cancer. Mengniu Group has submitted the relevant materials to the Ministry of Health, waiting for the approval of the Ministry of Health.

The Daily Economic News learned yesterday that the General Administration of Quality Supervision, Inspection and Quarantine issued an official letter to the Inner Mongolia Autonomous Region Bureau of Quality and Technical Supervision on February 2, requesting the Bureau to order Mengniu to prohibit the addition of new OMP substances to the milk of "Terensu".

The first official statement on "OMP"

The AQSIQ put forward the regulatory opinion in this official letter: "In view of the fact that China has not made clear regulations on the safety of OMP, IGF-1 substances are not traditional food raw materials, and are not included in the use of food additives. The addition of IGF-1 is not a traditional food ingredient, nor is it included in the standards for the use of food additives. Please order Mengniu to prohibit the addition of the above substances and notify Mengniu that, if the enterprise believes that OMP and IGF-1 are safe, the enterprise is requested to provide relevant materials directly to the Ministry of Health in accordance with the statutory program, and to apply to the health department for a decision on whether or not to allow the use of OMP and IGF-1."

This is the first time the official statement on Mengniu's "OMP". It is understood that before the Mengniu Terensu milk containing OMP and IGF-1 issued a question in the press. At the beginning of this year, the Inner Mongolia Autonomous Region Quality and Technical Supervision Bureau to the State Administration of Quality Supervision to submit "on the verification of Mengniu Terensu milk report on the situation". 2 February, the State Administration of Quality Supervision sent a letter to put forward the above regulatory comments.

Mengniu: still need to be verified with the technical department

Chen, director of the supervision department of the Inner Mongolia Quality Inspection Bureau, confirmed to the Daily Economic News yesterday that Mengniu Group has submitted the relevant materials to the Ministry of Health, waiting for the approval of the Ministry of Health. "Harmful and harmless is not known now, but the enterprise itself has done experiments to prove that the new OMP in the 'Terensu' is not a problem, but everything has to listen to the Ministry of Health." Chen said.

In addition, Chen told reporters, in accordance with the requirements of the General Administration, Mengniu in February 2 after the production of "Terensu" has not contained OMP substances.

The reporter contacted Mengniu Group spokesman Zhao Yuanhua twice last night by phone, and she said she was outside the meeting and was not clear about the matter, which needed to be verified with the technical department.

The reporter found in a large supermarket survey in Beijing, the production date of February 3, Terensu OMP milk on the shelves in the sale; at the same time, the production date of February 2 before Terensu is also on sale.

Nestle carcinogens

No carcinogens have been found in Nestle products in China. But for safety reasons, don't eat it first, and wait until you're completely sure about it

In our daily lives, cooking and heating are unavoidable, and most people refuse to give up fried food, so what can we do to minimize the harm of carcinogens such as benzo(a)pyrene? Here are some tips for you.

1. Consumption of fried, smoked food *** limited frequency. If you really like it, give yourself a rule. For example, eat only once or twice a month. When you eat fried food, you should also control the amount. If there is a dish in a meal is fried, other dishes should be light and less oil, the best is coleslaw, steamed vegetables, stewed vegetables and so on.

2. Stay away from all the fried and smoked food stalls. If you really want to eat, buy and leave immediately, do not linger in front of the stall. If you see this kind of stall on the road, hold your breath and run past it, so that you can inhale less cancer-causing smoke.

3. Eating out to eat barbecue, choose ventilation, pumping conditions good store, do not eat while smelling smoke. The meat must not be burnt, cooked in time to pick up and eat.

4. Eating out to eat grilled fish, urge the waiter, fish do not bake paste. Where the blackened place, must be thrown away, and do not let it soak in the oil in the disk, so as to avoid the spread of carcinogens to the oil.

5. their own home to do grilled meat grilled fish, to be able to control the temperature of the oven, do not directly on the gas or electric stove on the grill.

6. If you make fried food at home, try to control the temperature of the oil when frying, shorten the frying time, and don't deepen the color after frying, light yellow is good. The higher the oil temperature, the darker the color, the more toxic and carcinogenic substances will be produced. It is better to control the temperature at 160-180 degrees when frying, when there is little smoke and the food will blister a lot after being thrown in, but will not change color immediately. If you have a lot of smoke, or food discoloration is too fast, the temperature is too high.

7. Families occasionally fry something, frying oil try not to use soybean oil, corn oil, sunflower oil and other unsaturated fatty acids too much oil, with palm oil or animal oil is ideal. Without these oils, peanut oil and rice bran oil is slightly better.

8. When frying food, clean up the impurities in the oil in time. When frying food, there will often be small residue or debris left in the pot, they have been repeatedly fried for a long time, will be blackened paste, produce a lot of harmful substances, dissolved in oil or stained on the surface of the food will be hazardous to health. Therefore, when frying food to prepare a very fine mesh small strainer or funnel, timely fishing out the impurities in the oil.

9. Frying oil should not be used repeatedly. Repeatedly frying, carcinogen production will rise sharply, and will produce trans fatty acids and toxic fat oxidation products.

10. Always brush the pan after frying the first dish, and then fry the second dish. The grease and food residue that adheres to the surface of the pan is reheated, which can produce a variety of harmful substances, including carcinogens. Years ago, it was reported that the pot scale contains benzopyrene.

11. Do not make the oil long time in the smoke state, smoke contains a variety of toxic substances, especially smoke when the temperature is too high, the oil smoke will contain more benzopyrene, inhalation will increase the risk of human lung cancer. Before frying food on the open hood, frying food after also do not rush off the hood, the best and then continue to open ten minutes, the kitchen in the smoke all pumped clean.

12. If you have to eat smoked and fried food, do not go with other high-protein foods, but with leafy greens, raw vegetables and beans, coarse grains to eat together. Leafy greens contain a lot of chlorophyll and antioxidants, which can reduce the mutagenic effect of carcinogens in fried foods to a certain extent.

If possible, it's best to avoid deep-frying and smoking in the home, and replace them with stir-frying, oven-roasting, and pan-frying in water. For example, there are many semi-finished products coated with frying powder in the supermarket, such as chicken rice crackers, chicken fillets, shrimp cakes, etc. When processing such food, it may be worthwhile to ditch the deep-frying method and try the water frying method. Specific method is to put a little oil in the bottom of the pan, add a spoonful of water, the use of steam to the ingredients hot, steamed, water evaporation, a little oil will be the bottom of the ingredients fried crispy. Water frying method to make food, crispy outside and tender inside, as good as the taste, but the fat content is not high, carcinogen content is also very small.

Why does the human body convert pre-carcinogens into carcinogens

so that it is easy to treat