Particles in polluted air was small, "the amount of one-thousandth the thickness of a human hair, and too small to be absorbed by the filter system", but can cause massive damage to the brain of rats.
"You are not able to see it in free air, but when these particles are inhaled and affect the brain cells the opportunity to experience long-term brain damage also increases, "said senior researcher Caleb Finch of the University of Southern California, reported AFP.
According to the researchers, exposure to pollutants in the air causing "significant damage" to the brain cells in charge of the process of learning and memory. They also detect the "signs of inflammation are closely associated with premature aging and Alzheimer's disease. "
The results of this study published in the journal Environmenal Health Perspectives.
This research requires a series of further research to determine whether the same effects will be experienced by humans.
"Of course this will raise the question` How do we protect the city from this type of poisoning? `And the answer to that question remains a mystery," said Finch.
