British researchers found that people exposed to increased levels of air pollution had 40 percent higher chances of developing dementia.
Air pollution is an established risk factor for heart disease/stroke and respiratory disease, but its potential role in neurodegenerative diseases, such as dementia, isn’t as clear.
The researchers used carefully calculated estimates of air and noise pollution across Greater London to assess potential links with new dementia diagnoses.
They looked at patient data on 131,000 Londoners aged 50 to 79, and based on their residential postcodes, the researchers estimated their yearly exposure to air pollutants. These were specifically nitrogen dioxide, fine particulate matter and ozone, as well as proximity to heavy traffic and road noise, using modelling methods validated with recorded measurements. Continue reading