More than 57 million individuals worldwide suffer from dementia, and the global burden is growing. Yet, treatments to postpone or prevent the onset of dementia remain uncommon.

A study published in the BMJ found that exposure to fine particulate matter (PM2.5) air pollution comprising oxides such as nitrogen oxides is connected to an increased risk of dementia even at levels lower than the current US, UK, and European air quality laws.

After assessing study quality and risk of bias, they included 16 studies in their main quantitative analysis to study the link between air pollutants averaged over a year and dementia cases in adults.

Researchers discovered that in 14 studies, it was observed that for every 2 ug/m3 rise in average yearly PM2.5 concentration, the risk of dementia increased by 4%.

Results from active assessment studies indicated a 42% increased risk of dementia for every 2 ug/m3 rise in average yearly PM2.5 concentration. The study discovered no link between ozone and dementia.

The findings confirm the necessity of reducing exposure to PM2.5 and other air pollutants for public health and give regulatory bodies and others the most accurate assessment of the effect.

Successful steps to minimize air pollution would need worldwide law and policy initiatives focusing on the transition to clean and renewable energy sources, reduced energy use, and agricultural reforms.

 (Source:  https://www.hindustantimes.com/lifestyle/health/exposure-to-air-pollution-increases-risk-of-dementia-says-new-study-101681123946975.html)