Researchers find HEPA air purifiers improve mental function in adults over 40
Updated
Updated · ScienceAlert · Apr 25
Researchers find HEPA air purifiers improve mental function in adults over 40
4 articles · Updated · ScienceAlert · Apr 25
A study of 119 people in Somerville, Massachusetts, found adults over 40 completed cognitive tests 12% faster after using a HEPA purifier for one month compared to a sham device.
The improvement, particularly in mental flexibility and executive function, is comparable to benefits from increased daily exercise and may help prevent cognitive decline in populations exposed to traffic-related air pollution.
Researchers note the effects were observed after only one month and mainly in those over 40, with further studies planned to assess long-term benefits and mechanisms, especially for older adults and vulnerable communities.
Can HEPA filters reverse years of cognitive damage from city pollution?
Is cleaner air the new daily workout for your brain's executive function?
Air purifiers boost brain power, but are they just a band-aid solution?
How long does it take for polluted air to impact your brain function?
If official air quality is 'safe,' why is it still harming our brains?
HEPA Air Purifiers Improve Executive Function by 12% in Adults Over 40 Exposed to Traffic Pollution
Overview
The 2023 HAFTRAP study showed that using HEPA air purifiers for one month improved cognitive function by 12% in adults over 40 living near heavy traffic. Air pollution particles enter the brain through the bloodstream or nasal nerves, triggering chronic inflammation and oxidative stress that damage brain cells and blood vessels, increasing the risk of neurodegenerative diseases. HEPA filters reduce indoor pollution by capturing fine particles, which lowers harmful brain inflammation and protects cognitive health. Older adults are especially vulnerable to pollution's effects, while marginalized communities face higher exposure and greater risks. Though promising, long-term benefits and impacts on the oldest adults need further research.