New York City: A study has shown that even in clean air, chances of heart attack remain high.
In a study conducted at Columbia University in the US, researchers examined the amount of nitrogen dioxide (usually emitted by vehicles) in the atmosphere of nine US states over the past 15 years.
The data collected were later compared to the rate of hospitalizations due to heart attacks to determine the relationship between the two.
The study found that as the amount of nitrogen dioxide in the air increased, so did the rate of heart attacks. was
The increased risk of heart attack also occurred when nitrogen dioxide levels were below the current US standard (100 parts per billion of nitrogen dioxide in air).
This standard is in accordance with the quantity specified by the World Health Organization. According to the World Organization, per cubic meter of air should not contain more than 200 micrograms of nitrogen dioxide.
In a study published in the journal Environmental International, the researchers wrote that the findings suggest that current air standards are likely not sufficient to protect cardiovascular health. More stringent standards are urgently needed to overcome this problem.
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