Heavy traffic fumes 'can trigger heart attacks'

21 September 2011 Last updated at 09:01 ET Help

Exposure to pollution increases the risk of a heart attack for up to six hours, according to a study published in the British Medical Journal on Wednesday.

Dr Krishnan Bhaskaran led the team of researchers from the London School of Hygiene and Tropical Medicine and Radio 5 live's Morning Reports programme asked him what the study involved.

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