Air pollution can raise the risk of high blood pressure and heart problems. New research suggests that using at-home air purifiers with high-efficiency particulate air (HEPA) filters may help lower blood pressure for some people who live near busy roads.

HEPA Air Filters May Reduce Blood Pressure

Using HEPA air purifiers at home for a month lowered systolic blood pressure (SBP) by an average of 3 mm Hg in adults with elevated blood pressure, according to a study published in the Journal of the American College of Cardiology .

The 154 participants in the study lived within 200 meters of a major road, and they weren't taking any blood pressure medications.

"Elevated blood pressure is one of the leading causes of illness and death, so even small changes in blood pressure are impactful

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