A study found that using HEPA air purifiers for one month improved mental flexibility and executive function in adults aged 40 and older.
Key facts
- •The study included 119 participants between the ages of 30 and 74.
- •Participants aged 40 and older showed a 12% improvement in speed on executive function and mental flexibility tests.
- •The research was conducted in Somerville, Massachusetts, a location chosen for its high levels of traffic-related air pollution.
- •Researchers suggest that air pollution may negatively impact cognitive function by affecting the brain's white matter.
- •The study did not explore the long-term effects of air purification, as participants used the devices for only one month.
A study published in Scientific Reports indicates that using a HEPA air purifier at home for one month can improve brain function in adults aged 40 and older. Researchers analyzed 119 participants living in Somerville, Massachusetts, an area with high traffic-related air pollution. Participants were randomly assigned to use either a functional HEPA purifier or a sham device for one-month periods to measure the impact on cognitive performance.
By the numbers
Study Methodology and Findings
Participants performed tests measuring visual memory, motor speed, and executive function after using both real and sham purifiers. Those aged 40 and older, representing approximately 42% of the study group, completed tests for mental flexibility and executive function 12% faster when using the HEPA purifier compared to the sham device. These results remained consistent after accounting for variables such as time spent indoors and test-related stress.
Context and Future Research
While the observed cognitive improvement is modest, researchers noted it is comparable to benefits gained from increased daily exercise. The study suggests that reducing exposure to particulate matter may protect brain regions responsible for executive function, which are often negatively impacted by air pollution. Future research aims to determine if air purification protects the brain's white matter and whether longer usage durations could yield greater cognitive benefits.
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This article was independently rewritten by ManyPress editorial AI from reporting originally published by ScienceDaily.
