A
study by Canadian researchers at Simon Fraser University found that the use of
HEPA filters may help reduce cardiovascular disease risk that results from
exposure to air pollution, specifically that from residential wood smoke.
According
to this article, “After analyzing their data, the researchers found portable
HEPA filters reduced the average concentrations of fine particulates inside
homes by 60% and woodsmoke by 75%, and their use was associated with improved
endothelial function (a 9.4% increase in reactive hyperemia index) and
decreased inflammation (a 32.6% decrease in C-reactive protein).”
Dr.
Ryan Allen, one of the authors of the study, said that “‘Our results support
the hypothesis that systemic inflammation and impaired endothelial function,
both predictors of cardiovascular morbidity, can be favorably influenced by a
reduction of particle concentration and add to a growing body of evidence
linking short-term exposure to particulate matter with a systemic inflammatory
response. Reducing air pollution appears to provide health benefits even if the
pollution levels are already relatively low. HEPA filters offer an accessible
option to help reduce the risks of cardiovascular disease that may be
associated with inhaling wood smoke, especially as consumers turn more frequently
to woodstoves as a source of heat.’”
The article quotes Dr. Allen as
stating,”‘Ultimately, the best safeguard against these health risks is to
minimize the amount of air pollution that is created.’”
