- A large body of evidence shows that air pollution increases the risk of acute cardiovascular events, such as heart attacks and strokes, in susceptible people.
- A new study links reduced pollution in the United States as a result of COVID-19 restrictions in March 2020 to a decline in the number of heart attacks.
- The researchers analyzed concentrations of particulate matter known as PM2.5 and the incidence of the most severe form of heart attack.
- They found that the frequency of heart attacks declined in step with reductions in PM2.5.
Written by James Kingsland on November 8, 2021 — Fact checked by Anna Guildford, Ph.D.
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