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Pollution Increases the Risk to Heart Ailments
According to the National Atmospheric Emissions Inventory of the United Kingdom, historically, it was just smoke in combination with other pollutants that was known to cause health problems.
However, recent studies have linked concentrations of particles in the atmosphere with human health effects. Particles vary widely in size and composition. The PM10 particles are particles measuring 10Âμm or less. These are the particles which are likely to be inhaled by humans, and have become the widely accepted measure of particulate material in the atmosphere in the UK and in Europe.
In the 1970's, air pollution was mainly dominated by the domestic coal combustion, but more recently, other sources such as road transport (all road transport vehicles emit PM10, but diesel vehicles emit a greater mass of particulate per vehicle kilometer) and industrial processes (including bulk handling, construction, mining) account for a large share.
Only a few studies have observed the effects of exposure to particulate matter (pollution generated by traffic) on risk to myocardial infarction or, in simpler words, a heart attack.
(A heart attack occurs when blood flow to a part of the heart is blocked for a long time, eventually leading to death of that part of the heart muscle. In medical language, such a condition is called myocardial infarction)
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