WHO: Benzopyrene is a class 1 carcinogen, may be hiding on the dining table, keep your mouth shut

“Fried chicken and french fries are all junk food! They can cause cancer!”

Xiao Liu University was at home during the summer vacation and secretly ordered takeaways behind his family’s back , I bought some fried chicken and chips, but I didn’t expect to be caught by my mother. As soon as my mother opened her mouth, she criticized it, saying that fried foods are unhealthy and cause cancer.

“So many people eat fried chicken and chips, and no one has cancer,” Xiao Liu whispered.

“Don’t be afraid of ten thousand, just in case, experts say fried food contains carcinogensbenzopyrene , the more fragrant it is fried, the more likely it is to cause cancer.”

“The experts on the Internet are all liars. , that’s still alive.”


The mother and son fought for a while. , and no one persuaded anyone. For many people, they have heard elders say that fried food is unhealthy, but young people don’t care. Who is right and who is wrong.

First, the first-level carcinogen benzopyrene may be lurking around you

The International Cancer Center under the World Health Organization classifies carcinogens into four levels, namely Level 1, Level 2, Level 3 and Level 4. Among them, the first grade is a substance that is clearly carcinogenic to humans, and there is a relationship between long-term exposure to a grade 1 carcinogen and the occurrence of cancer.

And benzopyrene is one of the primary carcinogens. What is benzopyrene?

Benzopyrene is a class of polycyclic aromatic hydrocarbon compounds formed by condensing pyrene and benzene. Produced after complete combustion.

After exposure to benzopyrene,may cause damage to the nervous system and also lead to changes in the normal cell cycle< /span>, which in turn causes DNA damage and increases the risk of cancer. After eating food containing benzopyrene, benzopyrene will be absorbed by the intestinal tract, and then reach all parts of the body through blood circulation, thereby increasing the risk of disease and cancer in the human body.

The easiest way for us to come into contact with benzopyrene in our life is through food. To avoid this situation, pay attention to eating less of these foods.

Second, benzopyrene is easy to hide in these foods, everyone should eat less

1. Fried food< /strong>

Food will undergo oxidation, decomposition and other reactions during the frying process, and benzopyrene is easily formed in this process. If the cooking oil is heated to above 270℃, the fumes produced will carry a large number of carcinogens such as benzopyrene.

2. Smoked food

The fumes produced when grilled food are benzos The main source of pyrene, after the smoke is produced, it will adhere to the food and cause the food to be contaminated. Especially when baked food with high protein and high fat, the food is prone to cleavage reaction, and then polymerized to form benzopyrene.

Since it contains the carcinogen benzopyrene, will it cause cancer after eating it?

National Standard GB2762-2017 《National Food Safety Standard Food Contaminant Limits》 The content of benzopyrene in food is clearly stipulated in , and the upper limit of smoked food and smoked aquatic products is 5.0μg/kg.

A program of Zhejiang TV once tested common fried foods on the market and found that the content of benzopyrene in fried fried dough sticks was 0.645μg/kg, and that of fried chicken legs was 0.995μg/kg. kg, French fries were 0.922 μg/kg, and fried dough was 0.726 μg/kg.

Sincebenzopyrene is listed as a first-class carcinogen, indicating that it still has risks, but any carcinogenic reaction needs to consider the dose. Fan Zhihong, associate professor of the Department of Nutrition and Food Safety, School of Food Science and Nutritional Engineering, China Agricultural University once said that eating a class of carcinogens will definitely lead to cancer statement is incorrect. The meaning of a class of carcinogens only indicates the sufficiency of carcinogenic evidence, but the direct relationship with carcinogenicity and toxicity is not clear.

From the perspective of risk, it is recommended that everyone avoid long-term, large-scale exposure to primary carcinogens.

Third, take stock of common first-class carcinogens, and usually keep an eye on them

1. First-class carcinogens hidden at home< /span>


Aflatoxin is a very Strong carcinogenic substances, as long as a person ingests 1mg, it may cause cancer. It is widely found in life, including moldy peanuts and corn, bitter nuts, spoiled rice, poor quality peanut butter and earth-pressed peanut oil.


The acetaldehyde contained in alcohol is also a clear carcinogen , Long-term alcohol intake can lead to an increased risk of cancers of the throat, esophagus, liver, colon, and breast.

③Processed meat such as sausage ham p>

Bacon, sausage, ham and other processed meats are also carcinogens. A report published by the World Health Organization pointed out that a daily intake of 50g of processed meat can lead to an increased risk of colorectal cancer in Li Huan18 %.

2. First-class carcinogens encountered while going out

① Secondhand smoke

Secondhand smoke also contains a lot of harmful substances, including tar, heavy metals, nitrosamines, carbon monoxide and nicotine, etc. Substances will lead to the accumulation of a large number of carcinogens in the body, and the risk of DNA damage will increase, which will lead to an increased risk of cancers such as lung cancer, liver cancer, and skin cancer.

②Diesel engine exhaust

Exist in diesel engine exhaust Carbon monoxide, hydrocarbon-based gaseous substances and oily particulates rich in various polycyclic aromatic hydrocarbons. These substances can enter the body directly through the respiratory tract, which in turn can lead to a significant increase in the risk of lung cancer. Data show that the incidence of lung cancer and the death rate of people who have been exposed to diesel engine exhaust for a long time are 5 times and 3 times higher than those of ordinary people, respectively.


Asbestos is widely present in our In life, such as auto parts, decoration materials, furniture materials and medical equipment. It is a substance with very small fibers that are difficult to be detected by the naked eye. It is easily inhaled into the human body through the respiratory tract, which in turn can cause pulmonary fibrosis and even cancer.

There are a lot of carcinogens in our life, but don’t worry too much , there is a strong link between the occurrence of cancer and the amount and frequency of exposure to carcinogens. As ordinary people, we should try to minimize exposure to carcinogens, and occasional exposure generally does not directly induce cancer. #Number One Weekly#


[1]Liu Li. The impact of benzopyrene on the environment and its detection method Research Progress[J].Cleaning the World, 2020,36(03):31-32.

[2] Guan Financing, Wu Hangli, Wang Jia, An Peng, Ma Wanli, Cheng Dong, Lei Xin. Status of benzopyrene pollution and its biotoxic effects[J].Journal of Yan’an University(Natural Science Edition),2019,38(03):49-54.

[3]Sausage and ham Listed by WHO as a Class I carcinogen. China Food Industry, 2015(10): 9-9.

[4] “The correct way to open the skewer, please check it out”. Shangguan News. 2021.9.28

[5] “WHO says eating ham and sausage can cause cancer, don’t panic! 》.China Net.2015.10.27

Without the author’s permission, reprinting is prohibited