Experts interviewed by

: Luo Yunbo, Professor, School of food science and nutrition engineering, China Agricultural University

on October 26, the International Cancer Research Institute under the World Health Organization issued a report, which listed ham, bacon and other processed meat as grade 1 carcinogens, and red meat (meat of all mammals, such as beef, pork, mutton, horse meat, etc.) as a possible human carcinogen, i.e., grade 2A carcinogen, and said that this is a working group composed of 22 experts from 10 countries A large number of scientific literature review and analysis of the conclusion. There is ample evidence that processed meat can cause bowel cancer, the report said. Eating 50 grams of processed meat a day increases the risk of bowel cancer by 18%. It has been reported in the media that arsenic has caused a great deal of attention, and has been called carcinogenic. This newspaper in the first time exclusive interview with authoritative experts, for your detailed interpretation.

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experts: it is not surprising that they are listed as grade 1 carcinogens. According to the International Cancer Research Institute,

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, the processed meat refers to the meat that is artificially processed for the purpose of improving the taste and extending the shelf life by pickling, smoking, etc., mainly pork and beef. Typical processed meats include hot dogs, ham, sausages, salted beef, dried meat slices, jerky, canned meat, meat products and sauces. In an exclusive interview with life times, he Jiguo, associate professor of the school of food science and nutrition engineering, China Agricultural University, said: “I am not surprised that the World Health Organization has listed processed meat as a level 1 carcinogen.”

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indeed, there has been a long history of saying that processed meat such as ham, bacon and sausage causes cancer, which has also been widely recognized by the food and nutrition circles at home and abroad. Previous studies by the American Cancer Society have confirmed that long-term consumption of red meat products such as hamburgers, sausages and beef increases the risk of rectal and colon cancer. A Swedish study also found that eating one sausage or two slices of bacon a day increased the risk of pancreatic cancer by 20%. At the same time, women who eat a lot of fried meat and processed meat are more likely to suffer from breast cancer than women who eat less meat and only eat low-temperature cooked fresh meat (such as steamed, boiled, stewed).

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grade 1 carcinogens refer to the substances that have been proved to contain carcinogenicity. Nitrite is often added in the process of processing meat, which can synthesize nitrosamine with protein decomposition products in meat. However, Luo Yunbo, a professor at the school of food science and nutrition engineering at China Agricultural University, said that modern food processing technology is changing with each passing day. Among the various ham and bacon in the world, some are not smoked and have no nitrite added. Therefore, it is not recommended to say in general that Bacon and ham are carcinogenic and can not be eaten, but should be analyzed in detail.

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and “poison as arsenic” are too exaggerated

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In view of the statement that ham and other “poison as arsenic” are used by many domestic media, Luo Yunbo said that “poison like arsenic” refers to that Bacon, ham and arsenic are classified into one category in terms of the certainty of carcinogenesis, but their acute toxicity can not be compared with each other. This view is an evasive concept in order to attract attention. The carcinogenesis of

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is related to the dose. Although processed meat is listed as a class 1 carcinogen, the so-called grade 1 carcinogen does not mean how strong the “carcinogenic power” is, but how high the certainty of carcinogenicity is. For example, salted fish is also a grade 1 carcinogen. If we say that the toxicity of salted fish is comparable to that of salted fish, I’m afraid the degree of concern will not be as big as “poison as arsenic”. A small amount of food in life will not cause too much harm to the body. The human body has the ability to detoxify and metabolize a certain amount of “toxin”.

Yunwu, Ph.D. in food engineering, Department of agriculture and biology, Purdue University, USA, made an image comparison: eating about 50 grams of bacon every day will increase the risk of colorectal cancer by about 20%. This is about a 20% increase in risk, not a 20% risk of colorectal cancer. For example, if the risk for people who don’t eat at all is 1%, then the risk for people who eat becomes 1.20%.

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meats are mostly cooked and stewed. Experts of

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also said that the salt content, saturated fatty acid and cholesterol of processed meat are high. Taking salt content as an example, the study of Harvard University School of public health shows that the sodium content of processed meat products is 4 times higher than that of ordinary meat products on average.

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he Jiguo reminds us that we should pay attention to the following three points in our daily life. First, the toxic effect of any harmful substance needs a certain amount. The correct way is to reduce the intake and eat less or no processed meat. Because ham and bacon are often used as ingredients in pancakes, pizzas, sandwiches, etc., and these foods are mainly fried and roasted, they should be eaten less or not; secondly, it is suggested that people should cook fresh meat by steaming, boiling and stewing, and less by baking, frying and baking at high temperature, so as to avoid increasing the risk of cancer; thirdly, we should adhere to a diversified diet, balance diet and stop unhealthy diet Habit, this can spread the risk, avoid a harmful ingredient excessive intake, harm to health. ▲

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