There have been many disputes about the safety of genetically modified foods in our country, and it is difficult for both parties to reach consensus. Yesterday afternoon, Wu Congming, a member of the Chinese Academy of Engineering and the vice president of the Chinese Academy of Agricultural Sciences, was entrusted by the Agriculture GMO Safety Management Office of the Ministry of Agriculture to clarify some rumors about genetic hazards in a genetically modified workshop held in Wuhan. Wu Kongming said that eating genetically modified foods will not change human genetic material, will not affect fertility, nor will it affect future generations.

1 Why is it that genetically modified foods do not undergo human experiments?

Animal experiments can predict safety issues

Some instigators suggested that GM foods should be tested in humans, and people taking GM foods should be allowed to eat a set of experiments. During this period, they should not eat any natural food, so as to avoid buffering the natural food and eliminate as many interferences as possible.

For the “reverse” people, the most questioned “why does the GM food safety evaluation not do human experiments?”. Wu Kongming said that the existing toxicological data and bioinformatics data are sufficient to prove whether the (GM food) has any safety problems. Scientists use zoology experiments to infer the human body's experimental results, and rats replace human experiments, which is the international scientific community's practice.

According to Wu Kongming's analysis, according to the long-term food safety evaluation, during the safety evaluation experiment of genetically modified foods, the existing safety assessment concepts such as chemicals, foods, food additives, pesticides, and medicines were adopted to greatly exceed the conventional food dose. The supernormal experiment, using a series of world-recognized experimental models, simulation experiments, and animal experiment methods, can completely replace human experiments and calculate whether long-term consumption has a problem with human safety.

“According to the world’s accepted ethical principles, scientists should not and cannot have people continuously eat certain foods to eat for ten years and 20 years to do experiments and even continue to his descendants.” Wu Kongming said that using human experiments can not solve genetically modified foods. Due to the fact that people’s real life is rich and varied, food is varied, and people eat genetically modified foods to evaluate their safety, it is impossible to perform strict management and control as in animal experiments, and it is difficult to rule out the interference of other food ingredients. .

2 What is the relationship between tumor onset and genetically modified soybean oil?

Only looking at the amount of consumption can not be justified

In 2013, a manuscript entitled “Highly related to genetically modified soybeans and cancer and infertility” caused constant public panic. The paper said that the person in charge of the Soybean Association of a certain province in Northeast China introduced Henan, Hebei, Gansu, Qinghai, Shanghai, Guangdong, and Fujian. It is a region that consumes more genetically modified soybean oil, and these areas are also areas where tumors are concentrated; Heilongjiang, Liaoning, Zhejiang, Shandong, Hunan, Hubei, Guizhou, and other places do not primarily rely on the consumption of genetically modified soybean oil, and are not concentrated areas where the onset of cancer occurs. Therefore, the consumption of genetically modified soybean oil may have a great correlation with the high incidence of cancer (cancer).

Is there any correlation between genetically modified soybeans and cancer? Wu Kongming clarified that the data and conclusions that are consistent with the provinces where the cancer incidence is concentrated and the provinces where the genetically modified products are concentrated are very simplistic and simple. The data from different registration sites in the same province are very different. They are also Guangzhou City and Zhongshan City in Guangdong Province. The incidence of cancer in each 100,000 people is about 320 and 200 respectively, while the incidence of Shenyang in Liaoning Province is about 250. However, Dalian broke through 350.

Whether the incidence of cancer in the population is related to the consumption of genetically modified soybean oil requires a comprehensive consideration of the population density of the entire province, the proportion of genetically modified soybean oil in the diet, the specific tumor type, and other parameters. It is obviously not possible to compare the total consumption of genetically modified soybean oil in the provinces. Summary.

At the same time, the correlation is not the same as the cause and effect relationship, the tumor has a variety of factors, dietary habits, living habits and other life factors, environmental factors such as water, air and soil, and social factors such as medical care and aging, all affect cancer incidence. The important aspect of the rate. The differences in cancer incidence and common cancer types in different regions are also related to regional-specific environmental factors, life factors, and genetic factors.

3 Transgenic breeding violates the laws of biological evolution?

There is no essential difference with traditional breeding

"Natural selection and survival of the fittest," Wu Kongming said, biologically inherited and mutated, in the struggle for survival and natural selection, it evolved from simple to complex and from low to high. Genes within and outside the species, and even between different species, are horizontally transferred and continue to break the original population isolation, which is an important cause of biological evolution.

Both genetic breeding methods and traditional agricultural breeding methods change the traits of crops at the molecular level. There is no essential difference. “The vast majority of the crops we grow have long since been not wild species that have evolved naturally, but have been artificially transformed over thousands of years, continuously breaking new varieties and new species created by reproductive isolation and transfer of genes,” said Wu Kongming.

Wu Kongming said that the transgenic technology is the latest breeding and domestication technology for human beings. It is a more accurate, more efficient and more targeted directional breeding technology. Transgenic breeding technology, like traditional breeding techniques, does not violate the laws of biological evolution in nature.

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