Entire global population breathes air that threatens their health: WHO

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ISLAMABAD: Almost the entire global population (99 per cent) breathes air that exceeds WHO air quality limits and threatens their health.

A record number of over 6,000 cities in 117 countries are now monitoring air quality, but people living in them are still breathing unhealthy levels of fine particulate matter and nitrogen dioxide, with people in low and middle-income countries suffering the highest exposures.

The findings have prompted the World Health Organisation (WHO) to highlight the importance of curbing fossil fuel use and taking other tangible steps to reduce air pollution levels.

Released in the lead up to the World Health Day, which this year celebrates the theme “Our planet, our health, the 2022 update” WHO’s air quality database depicts global situation.

According to a statement, the new air quality database is the most extensive yet in its coverage of air pollution exposure on the ground. Some 2,000 more cities/human settlements are now recording ground monitoring data for particulate matter, PM10 and/or PM2.5, than the last update. This marks an almost 6-fold rise in reporting since the database was launched in 2011.

Meanwhile, the evidence base for the damage air pollution does to the human body has been growing rapidly and points to significant harm caused by even low levels of many air pollutants.

Particulate matter, especially PM2.5, is capable of penetrating deep into the lungs and entering the bloodstream, causing cardiovascular, cerebrovascular (stroke) and respiratory impacts. There is emerging evidence that particulate matter impacts other organs and causes other diseases as well.

NO2 is associated with respiratory diseases, particularly asthma, leading to respiratory symptoms (such as coughing, wheezing or difficulty breathing), hospital admissions and visits to emergency rooms.

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