Sat Jul 26 02:30:00 UTC 2025: ## News Article: Air Pollution Linked to Increased Dementia Risk: Global Study Raises Concerns

**New Delhi, July 26, 2025** – A new study published in *The Lancet Planetary Health* has strengthened the link between air pollution and an increased risk of dementia, raising serious concerns for public health globally, and particularly in regions like India grappling with severe air quality issues.

The study, analyzing data from over 26 million adults across four continents over a period of up to 23 years, found that even relatively small increases in exposure to common air pollutants like fine particulate matter (PM2.5), nitrogen dioxide (NO2), and soot significantly increased the risk of developing dementia.

Specifically, researchers found that an additional 5 micrograms per cubic meter (µg/m3) of PM2.5 particles in the air increased the risk of dementia by approximately 8%. Increases in NO2 and soot also correlated with increased dementia risk, by around 3% and 13% respectively.

The findings highlight the detrimental impact of traffic, industrial emissions, and the burning of fuels on brain health. Researchers argue that improving air quality could significantly reduce future dementia risk, lowering healthcare costs and easing burdens on families.

While the overall certainty of the evidence was rated as “moderate,” the sheer scale of the study and the consistent association across diverse populations underscore the urgency of addressing air pollution as a critical public health priority. The findings are particularly relevant in India, where high levels of air pollution are prevalent in many urban areas. Experts are urging policymakers to take immediate action to reduce air pollution levels and protect the brain health of the population.

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