Exposure to air pollution may increase the risk of stroke

The risk of stroke doubles in the winter due to poor air quality, especially when the temperature drops sharply. Air pollution, particularly fine particulate matter (PM2.5), contributes to the development of atherosclerosis and high blood pressure, both of which increase the risk of ischaemic stroke. Emissions by vehicles, burning fuel to heat homes, power plants and chemical production are considered as the main roots of air pollution. There are several ways air pollution may raise the risk of stroke.