How to make climate change affects the arsenic of rice

Rice is a necessity for billions of people on Earth, but new studies show that climate change can increase the arsenic levels contained in grains.

Therefore, scientists are concerned about the recent discovery. When carbon emissions increase and the earth keeps warm, there is also an arsenic level of rice.

Researchers around the world have studied how to reduce the level of arsenic, and there are ways to cook some of these harmful elements from grains (see more stories).

However, a new study on weapons arsenic accumulation can be a bigger problem due to climate change. Researchers have raised 28 different strains in four regions in China for 10 years.

They found that rice arsenic levels increase as the level of carbon dioxide (CO2) of atmosphere and temperature increases. The epidemiologists then modeled how these arsenic levels can affect people’s health at the current level of rice consumption. They estimated that the corresponding increase in arsenic levels of rice could contribute about 19.3 million cancer cases in China alone.

“Inorganic arsenics have been shown in more studies than that can throw carcinogens, more studies than that can have side effects related to lung health in relation to cardiovascular health.

It is worth noting that the worst scenario of the researchers is that it goes beyond the “general business” scenarios used by the UN organization on climate change and the UN organization on climate change. The most serious prediction is assumed that the temperature is increased by 2C, and the CO2 level is further increased between 2025 and 2050. However, if carbon discharge does not decrease, it offers snapshots about what can happen to rice crops in the future.

ZISKA said, “We are not the first person to see carbon dioxide, not the first person to temperature, but we are the first person to collect them in the field, and it surprised us.

Of course, this study is limited except for the indicators selected in the 2050 scenario. First of all, people assumed that they would continue to consume the same amount of rice per capita in 2050 in 2050, but rice consumption tends to fall when rice is rich in 2021. On the other hand, people assume that they will continue to eat more white rice than brown rice. Because of the processing method White rice is less weapon than brown rice. -Therefore, if you go in the other direction, the number may get worse.

Nevertheless, this is a long -standing researcher at Rice and Arsenic, who is not involved in the study of the study of the biology science professor of biology science at the Queen ‘S University Belfast. “This is as powerful as you are more likely to get.”

Over the last decades, scientists have found that even smaller amounts of arsenic can affect health when exposure occurs in a lifetime.

Rice tends to choke with weeds. But rice can grow in water, but weeds cannot be done. ZISKA says, “This provides a bigger rice than weeds, and you don’t have to spray it, you don’t have to create a hoe.” ZISKA says. “But there are disadvantages. The downside is that there is no oxygen in the soil.” Under these conditions, the anaerobic bacteria of the soil turn into an arsenic alternative to oxygen to accommodate electrons when breathing. Then this bacteria will be promoted Reaction with other minerals of the soil Make you more living arsenic It is easier for rice plants to absorb Through the root system.

ZISKA said, “The arsenic occurs in its own when the soil moves the soil by less oxygen.” that Changes the microorganisms of soil In the way more bacteria that like arsenic come out.

And this predicts that as the temperature of the atmosphere and the level of carbon dioxide rises, he and his fellow researchers will worsen. ZISKA said, “This soil bacteria are getting more carbon. You are making small bacteria happier with warm and warm temperatures, but they just go crazy while giving more carbon. “

ZISKA and his team found that this effect accounted for about 90%of the 28 kinds of rice that grew in a 10 -year study.

What public health experts worry is that the more research on weapons arsenics, the worse the impact on humans. January 2025, The US Environmental Protection Bureau has updated the evaluation Weapon “Cancer efficacy factor”Consider all new researches about arsenic and diseases. According to their latest assessments, Keeve Nachman, a co -author of environmental and engineering professors at Johns HopkinSchool of Public Health School, and co -author of rice and arsenic research, said, “Arsenic is much more powerful than we believed before.” Especially, arsenic Risk of skin cancerbut Lungs and bladder cancer.

In the case of individuals, the risk is insignificant. for example, Latest EPA review If you consume 7.8 micrograms for 0.13 micrograms or 60kg per kilogram of weapon arsenic per day, the risk of developing bladder cancer is about 3% and diabetes increased by about 1%.

But those who eat a lot of rice, especially many rice, can add this little danger. And if ZISKA and his colleagues are found to be correct, this can greatly affect the disease of a group that depends on rice for decades.

So what can you do besides reducing emissions and keeping the temperature as low as possible?

In addition, better monitoring and regulations on arsenic exposure in foods said researchers said. Marham said, “Policy makers have been on this for decades.

Currently, the US Food and Pharmacy does not adjust the arsenic level of rice We have set a 0.1mg/kg rice limit for children’s consumption.. In 2023, the EU proposed a new restriction on 0.2 mg/kg of rice for rice weapons, while China proposed to introduce similar limitations. But these recommendations do not consider that some communities eat much more rice than other regions.

ZISKA said, “There is a way to reduce the amount of weapon arsenic, but it is necessary to change the way rice is currently growing.” “I need attention because it affects many individuals around the world.”

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