Air pollution is now linked to a higher risk of dementia, including Alzheimer’s.

By Aniket Chakraborty July 26, 2025 Arrow HEALTH & WELLNESS

A Lancet study warns of long-term brain damage from vehicle emissions.

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For every 10 μg/m³ of PM2.5, dementia risk rises by 17%.

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Even 1 μg/m³ of soot can increase dementia risk by 13%.

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PM2.5 pollutants mainly come from vehicle exhaust and wood burning.

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Air pollution triggers brain inflammation and oxidative stress.

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Dementia cases may triple globally, reaching 152.8 million by 2050.

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The study analyzed 51 global studies with data from 29 million people.

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Stronger effects were seen for vascular dementia caused by poor brain blood flow.

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Experts call for urban planning and transport reforms to cut pollution risks.

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