File photo (Image Credit: CFJC Today)

By Michael Reeve

NEW RESEARCH PAPER

New study published by TRU professor finds causal link between pollution and dementia

Aug 22, 2024 | 5:30 PM

KAMLOOPS — New research published by a Thompson Rivers University (TRU) professor finds a causal relationship between air pollution and dementia following a multi-year study. The paper looked at the impact of air pollution reductions in Beijing, China before and after the 2008 Olympic Games, finding that a reduction in 2010 could generate more than $2.3 billion in benefits due to a lower dementia prevalence.

While smoke-filled skies have mostly evaded Kamloops this summer, memories of orange haze remain from year past, and a new research paper is highlighting a link between air pollution and dementia.

“We compared Beijing with other provinces (in China) before and after the (2008) Olympic Games, and what we find is that the case of dementia reduced significantly after the air pollution reduction. That means air pollution regulation can be an effective means for reducing the burden of dementia and also our healthcare costs,” said study author Dr. Meng Sun.

The study was conducted over five years, leading Dr. Sun to believe prolonged exposure is needed. And while the study looked into industrial pollution, wildfire smoke carries with it the same risk.

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“From our research, we believe that once the pollution level, or the PM10 level, goes above 50 micrograms per cubic metre, the health risks started increasing,” said Sun. “The vulnerable group of people can feel the effects with lower levels. And remember, during wildfire season, the PM10 levels can go above 100.”

While skies are blue in Kamloops currently, Sun still cautioned that those at higher risk, such as children, elderly and those with pre-existing conditions should take care in the summer.

“During the big wildfire seasons, the pollution can be very, very serious, so I believe, even though we have very good systems in place for vulnerable people, it’s important for them to take extra steps — for example, staying indoors or using air purifiers.”

Dr. Sun is looking to expand his research, looking more into the longer term effects of pollution exposure.