Constant exposure to smog linked to heart disease

The association of air pollution and coronary events has been controversial, but Dutch researchers say their study involving 100,000 people followed for 11.5 years suggests European Union ‘safe’ limits should be lowered.

The EU’s limit for small participate matter is twice as high as that in the United States, which in turn is higher than the air quality guideline set by the World Health Organization.

The European study found every 5ug/m3 increase in particulate