A study confirming a link between atmospheric pollution and heart-attack risk strengthens the EU case for tougher clean-air targets, experts say.
Research in the BMJ looking at long-term data for 100,000 people in five European countries found evidence of harm, even at permitted concentrations.
Experts stressed that the risk to an individual was still relatively small.
And some argued the results were not conclusive as they did not take account of previous exposure to higher levels.
See full Article: http://www.bbc.co.uk/news/health-25827304
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