In research that publish in British Medical Journal, the expert found the explanation of pollutant particle and nitrogen dioxide that out from vehicle smoke, and this really dangerous for heart, in spite of the risk is small, only 1,3 percent.
Nevertheless, exposure to the two-particle in a long time into the lungs can trigger heart attacks, about six hours after a person is inhaling pollutants. The experts call this condition as an effect of "harvesting" of pollution.
Krishnan Bhaskaran and his team from the London School of Hygiene and Tropical Medicine tested on 79 288 cases of heart attacks that occurred in the 15 suburban England and Wales between 2003-2006. Then the researchers measured the amount of pollution in the area at the time the patient had a heart attack. The data used are from the UK National Air Quality Archive.
The researchers also measured levels of carbon monoxide, sulfur dioxide and ozone, as well as other pollutant particles called PM10 and nitrogen dioxide.
"We expect was the level of pollutants in the environment 'PM10' and 'NO2' is high enough, can trigger a heart attack six hours later," the researchers said.
Professor Jeremy Pearson of the British Heart Foundation explains, can cause air pollution thickens the blood making it easier to congestion and high risk of heart attack.
"My advice to patients already diagnosed with heart disease should avoid being outside the polluted air in a long time," he said.
British study also concluded that air pollution causes 29 000 premature deaths each year.
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