Air pollution may impact cognitive abilities: Study

Long-term exposure to air pollution impedes cognitive performance, a recent study found.

Air pollution may impact cognitive abilities: Study

Live Well

Long-term exposure to air pollution impedes cognitive performance, a recent study found.

Researchers say the negative effect of air pollution becomes more pronounced as people age, especially for less educated men.

The US-Chinese study, which monitored the maths and verbal skills of some 20,000 people in China over four years, revels that more than 80 percent of the world’s urban population breathe unsafe levels of air pollution

The study, published by the Proceedings of the National Academy of Sciences, measured air quality based on daily rating of three pollutants: sulphur dioxide, nitrogen dioxide and particulates smaller than 10 micrometres in areas where respondents lived.

"We find that air pollution impairs verbal tests, and the effect becomes stronger as people age, especially for less educated men," the study said

"Cognitive decline or impairment are risk factors of Alzheimer’s disease and other forms of dementia for elderly persons," it added.

According to the World Health Organization, the top 20 most polluted cities are all in developing countries. Around 98 percent of the cities in low and middle-income countries with a population of more than 100,000 people fail to meet air quality guidelines set by the World Health Organization.

Air pollution may impact cognitive abilities: Study

Copyright © 2015 Medicare. All rights reserved

. powered by diva-lab