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在线翻译:
szdaily -> Lifestyle -> 
Air pollution can make people dumber
    2018-08-31  08:53    Shenzhen Daily

AIR pollution could be more damaging to our health than previously thought, according to a new study, which found that prolonged exposure to dirty air has a significant impact on our cognitive abilities, especially in older men.

According to the study published Tuesday in the Proceedings of the National Academy of Sciences, breathing polluted air causes a “steep reduction” in scores on verbal and math tests.

Researchers at the International Food Policy Research Institute (IFPRI) examined data from the national China Family Panel Studies longitudinal survey, mapping the cognitive test scores of nearly 32,000 people over the age of 10 between 2010 and 2014 against their exposure to short- and long-term air pollution.

The team found that both verbal and math scores “decreased with increasing cumulative air pollution exposure,” with the decline in verbal scores being particularly pronounced among older, less educated men.

“The damage air pollution has on aging brains likely imposes substantial health and economic cost, considering that cognitive functioning is critical for the elderly to both running daily errands and making high-stakes economic decisions,” study author Zhang Xiaobo of Peking University said.

Cognitive decline or impairment, which could be caused by air pollution according to the study, are also potential risk factors in developing Alzheimer’s disease or other forms of dementia.

Pollution exposure was measured using data on air quality, which includes three air pollutants: sulfur dioxide, nitrogen dioxide and particulate matter smaller than 10 micrometers in diameter.

According to the World Health Organization (WHO), nine out of every 10 people on the planet breathe air containing a high level of pollutants, with the worst affected regions being Africa and Asia.(SD-Agencies)

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