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Each year, more than one million deaths worldwide are associated with short-term (hours to days) exposure to airborne fine particulate matter (PM2.5). According to a recent study, more
Each year, more than one million deaths worldwide are associated with short-term (hours to days) exposure to airborne fine particulate matter (PM2.5). According to a recent study, more than one million people worldwide die every year from short-term (hours to days) exposure to fine particulate matter (PM 2.5) in polluted air. East Asia accounts for most of these global deaths due to short-term exposure to PM2.5.
Most research today focuses on the health effects of living in cities where pollution levels are consistently high; It ignores frequent pollution “spikes” that can affect small urban areas, such as wildfires, dust, and other periodic extreme atmospheric pollution concentration events.
A Monash University study examining death rates and PM 2.5 pollution in more than 13,000 cities and towns around the world over the two decades to 2019 is published today in The Lancet Planetary Health.
The research, led by Professor Yuming Guo, is important because it is the first to look at short-term exposure worldwide, rather than the long-term effects of permanent exposure, for example, for people living in highly polluted cities.
Researchers say PM inhalation2.5 Within a few hours, or even a few days, it causes more than a million premature deaths each year worldwide, particularly in Asia and Africa, with more than a fifth (22.74%) of these occurring in cities.
According to Professor Guo, the short-term health effects of air pollution are well documented, “for example, megafires in Australia during the so-called Black Summer of 2019-2020 resulted in an estimated 429 smoky fires, resulting in acute and persistent extremely high levels of air pollution associated with wildfires.” linked to premature deaths and 3,230 hospitalizations due to exposure,” he said.
“But this is the first study to map the global impacts of short-term bursts of air pollution.”
The authors add that “understanding the burden of death associated with short-term exposure to PM is possible” due to high population density in urban areas as well as high levels of air pollution. 2.5 In such areas, it is vital to reduce the negative impact of air pollution on the city. people”.
According to the research:
The death rate was highest in overcrowded, highly polluted regions in East Asia, South Asia, and West Africa; of deaths were attributable to short-term exposure to PM 2.5 In East Asia it was 50% higher than the world average.
Most parts of Australia saw a slight decrease in the number of related deaths, but the rate of related deaths increased from 0.54% in 2000 to 0.76% in 2019; this was more than any other subregion. One potential cause could be an increase in the frequency and magnitude of weather events that cause extreme air pollution, such as the wildfires of 2019.
The study recommends implementing targeted measures, such as air pollution warning systems and evacuation plans, to prevent short-term exposure to high PM concentrations in places where health is most affected by severe air pollution. 2.5 can alleviate acute health damage.
Source: Port Altele
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