What are the health implications of PM10 and PM2.5



Epidemiological studies show that the most severe health effects caused by air pollution are due to particulate matter, and to a lesser extent, to ozone. Inhalation of particulate matter causes irritation or damage to the pulmonary tissue. Particulate matter can cause both short and long-term health effects.

According to the World Health Organisation (WHO) there is no safe threshold value below which no harmful effects occur. While particles with a diameter of 10 microns or less, (≤ PM10) can penetrate and lodge deep inside the lungs, the even more health-damaging particles are those with a diameter of 2.5 microns or less, (≤ PM2.5). PM2.5 can penetrate the lung barrier and enter the blood system. Chronic exposure to particles contributes to the risk of developing cardiovascular and respiratory diseases, as well as of lung cancer.

 

More information can be found at 

https://www.who.int/news-room/fact-sheets/detail/ambient-(outdoor)-air-quality-and-health



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