A new study has found that air purifiers, specifically ones with HEPA air filters, might lower blood pressure in certain groups and therefore boost cardiovascular health, as reported in the Journal of the American College of Cardiology.

Short and long-term exposure to air pollution is linked to a range of health conditions, including high blood pressure. Scientists set out to look more closely at this by studying a small group of 154 participants, all of whom lived near a highway and were regularly exposed to air pollution because of this.

All of the participants in the study were over 30 (the average age was 41), and a majority were of a higher socioeconomic status. They all lived full-time at the highway-adjacent residence, and none of the participants had a history of heart attack, st

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