ZZ91 information: Every time something bad happened, once it was reported, everyone knows, and then the audience became a scared bird, this time the salt storm is like this. Although the experts later interpreted it, the masses still have a lingering fear and pay more attention to food safety. However, experts remind everyone that it is a good thing to pay attention to food safety, and it is not good to fall into the misunderstanding.
Recently, Dr. Shi Huahong, a research team from East China Normal University, discovered the study of plastic particles in the commercially available salt. After the report of Scientific American, there was a storm: the article said that 15 different brands of salt were purchased from supermarkets across China. It is found that plastic granules are contained to varying degrees, and there are more than 1,200 plastic particles in each pound (about 0.45 kg) of sea salt, which makes people breathe a cold breath.
"Don't panic, things are not that serious," said Wang Hui, a researcher at the Institute of Nutritional Sciences, Shanghai Institute of Bioscience, Chinese Academy of Sciences. Those sensational food safety news often have interpretations of "traps."
Increasing the risk of cancer is not the same as carcinogenic
If you are concerned about food safety information, then it is estimated that these days have been "disorganized in the wind". In less than a month, not only meat products such as bacon and sausages have been included in the blacklist of carcinogens, which is indispensable in life. The salt is also "in the middle of the stroke."
0.45 kg of sea salt contains 1200 plastic granules. Does it sound a lot? At present, about 8 million tons of plastic waste flows into the sea from the land every year. Due to the large amount of plastic pollutants floating in the marine environment, not only the marine water, but also many marine organisms contain many plastic particles. However, according to a report last year, the average number of plastic particles in the shellfish consumed by Europeans per person per year was about 11,000. Because plastic particles in salt are less than sea salt, Wang Hui said that even if one reaches the maximum daily intake of salt recommended by the World Health Organization, it will only consume more than 1,000 plastic particles per year.
Even if you pay attention to the measurement numbers, you should pay attention to the way of understanding. For example, at the end of last month, the International Organization for Cancer (IARC), a subsidiary of the World Health Organization, officially issued a notice to classify processed meat products such as ham and bacon into carcinogens, and the cancer risk is the first level, which is almost the same as asbestos, cigarettes, arsenic, etc. The substance is equivalent. Earlier, the American Cancer Institute said that eating 50 grams of bacon per day would increase the risk of colorectal cancer by about 21%.
To correctly understand the "increased risk of colorectal cancer by 21%", we have to explain. The World Health Organization's carcinogen rating is based on solid evidence that a substance increases the risk of cancer in the body. The highest-grade first-class carcinogen indicates that there is a solid evidence of carcinogenicity, indicating that the substance increases the risk of cancer in humans, but Does not indicate the size of carcinogenicity. For example, the same level of carcinogens, as well as alcoholic beverages, Chinese salted fish, betel nut and solar radiation.
Processing meat products has increased cancer risk and has long been widely recognized in the food nutrition community. However, eating bacon will increase the risk of colorectal cancer by about 21%, and does not mean that 21% of the risk of colorectal cancer. For example, if a person who does not eat bacon at all has a cancer risk of 1%, then the risk of eating bacon becomes 1.21%. Therefore, Li Shuguang, a professor and nutrition expert at the School of Public Health at Fudan University, said that people do not need to be overly nervous. This is just a warning or a reminder of food safety risks.
Over-interpretation of food safety is easy to be “utilizedâ€
People's attention to food safety will also be used by some “bad†businesses. At a food safety forum held by the fruit shell network, Li Shuguang said such a thing: a milk manufacturer claims that its products do not contain asbestos and other additives. In fact, asbestos is a high-strength, erosion-resistant silicate mineral that is not associated with any part of the production of milk. "The practice of merchants is like selling watermelons. It is ridiculous that my watermelons do not contain peaches." Li Shuguang said.
Until now, there are many milk manufacturers who have publicized their own dairy products using pasteurization. In fact, it was this disinfection method invented by French biologist Louis Pasteur in 1862 that gave milk The possibility of commercialization. Li Shuguang said that pasteurization is the basic process of all dairy groups, and even companies that do not use this promotion must use this method.
Zhao Guoping, a member of the Chinese Academy of Sciences and a molecular biologist, said that even in Europe with a high civic scientific literacy, it is not easy to improve citizens' understanding of food safety. For example, in a related questionnaire in Switzerland, you have such a problem. Do you have genes in the things you eat every day? 50% of the respondents chose “noâ€, which made the scientists laugh and laugh. It also shows that it is really necessary to constantly strive to interpret food safety.
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