New York

Researchers at Columbia University have announced that people who breathe clean air are also at risk of heart attack. He did research in America for 15 years. He said that the risk of heart attack is high due to the nitrogen dioxide (NO2) coming out of the cars. In the US, the standard NO2 level of 100 parts per billion (ppb) showed that people who breathed air below this ppb were also at risk of heart attack. Furthermore, if polluted air is inhaled, it is sure to collapse within 60 minutes. People breathing clean air are also at risk of heart attacks.

He did research in America for 15 years. He said that the risk of heart attack is high due to the nitrogen dioxide (NO2) coming out of the cars. In the US, the standard NO2 level of 100 parts per billion (ppb) showed that people who breathed air below this ppb were also at risk of heart attack. Furthermore, if polluted air is inhaled, it is sure to collapse within 60 minutes.

People breathing clean air are also at risk of heart attack. He did research in America for 15 years. He said that the risk of heart attack is high due to the nitrogen dioxide (NO2) coming out of the cars. In the US, the standard NO2 level of 100 parts per billion (ppb) showed that people who breathed air below this ppb were also at risk of heart attack. Furthermore, if polluted air is inhaled, it is sure to collapse within 60 minutes.