EPA’s MESA Air Study Confirms that Air Pollution Contributes to the #1 Cause of Death in the U.S.


For more than two decades, scientific evidence has shown fine particle pollution (PM2.5) in the outside air is a cause of cardiovascular illness and death, and has justified improving the PM2.5 annual National Ambient Air Quality Standard to protect public health.  Yet, the Multi-Ethnic Study of Atherosclerosis (MESA) Air Pollution Study was the first U.S. research study to examine a group of people over a period of 10 years and measured directly how long-term exposure to air pollution contributes to the development of heart disease and can lead to heart attacks, abnormal heart rhythms, heart failure, and death.

Learn more on the U.S. EPA’s blog here.

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