January 05

Air Pollution & Elevated Risk of Stroke: Size of Ambient Particulate Matter Tied to Stroke Deaths in 2022 Study

9 minutes to read

Exposure to particulate matter in the air has long been connected to a wide range of poor health outcomes. A new study published in Neurology has revealed a link between short-term and long-term exposure to particulate matter and stroke mortality. Furthermore, the study has demonstrated the increased dangers associated with smaller-sized particles.

Particulate Matter Size Classifications Explained

There are three classifications of particulate matter based on the diameter of particles. Particulate matter is measured in microns (micrometers); one micron is a millionth of a meter or a thousandth of a millimeter. To put the scale of particulate matter into perspective, human skin cells range from 20 to 40 microns in diameter on average, while a large grain of pollen is approximately 70 microns across.

The size classifications of particulate matter are as follows:

  • PM10 is the largest classification of particulate matter and is sometimes referred to as “coarse particulate matter,” with a diameter under 10 microns. While PM10 is small enough to be inhaled, our respiratory systems are able to filter out particles of this size before they enter the lungs.
  • PM2.5 refers to particles that have a diameter of 2.5 microns or less and is also referred to as “fine particulate matter.” Much of the research examining the effects of particle pollution on human health focuses on the effects of PM2.5. The infected respiratory aerosols that are responsible for spreading the...

Read Full Story: https://cleanair.camfil.us/2022/12/16/air-pollution-elevated-risk-of-stroke-size-of-ambient-particulate-matter-tied-to-stroke-deaths-in-2022-study/

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