How air pollution reduces the capacity of the brain?
A four-year study in China has shown that air pollution can have a serious effect on the human brain.
Language and math abilities were tested among 20,000 men and women of different age groups.
The test results were compared with the level of air pollution.
The researchers then concluded that the more pollution there was, the more it affected brain function.
The greatest impact was on men over the age of 64 and with little education.
What happens
The study found that pollution increases the risk of Alzheimer's and dementia.
Some pollutants directly affect brain chemicals in a variety of ways. For example, along with small pollutant particles, pathogenic particles can also enter the brain directly.
Some factors have psychological effects that can lead to depression.
Researchers believe the findings are relevant worldwide.
According to the World Health Organization, about 90 percent of the world's population is forced to breathe in unsafe air.
According to him, 7 million people die prematurely every year due to air pollution.
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