English 中文网 漫画网 爱新闻iNews 翻译论坛
中国网站品牌栏目(频道)
当前位置: Language Tips > 新闻选读

研究:空气污染使大脑衰老更快
Air pollution 'ages the brain' a study suggests

[ 2012-11-19 13:28] 来源:中国日报网     字号 [] [] []  
免费订阅30天China Daily双语新闻手机报:移动用户编辑短信CD至106580009009

美国南加州大学的研究人员发现,居住在空气污染严重地区的老年人大脑要比实际年龄“老三岁”,因其大脑认知功能受到空气质量影响衰退更快。这项针对超过1.4万50岁以上人群进行的研究发现,空气污染对大脑健康及其功能都有负面影响。研究人员发现,每立方米空气中的污染微颗粒增加10微克,大脑认知能力就会下降0.3。而人的年龄每增加一岁,大脑认知能力仅下降0.1。由于老年人在健康和身体功能方面均开始衰退,因此其大脑功能和身体状况更易受到空气污染的不良影响。此前已有研究显示,空气污染与日益增加心血管疾病和呼吸系统疾病有关。

研究:空气污染使大脑衰老更快

研究:空气污染使大脑衰老更快

Elderly people living in areas of high air pollution have brains that are 'three years older' as cognitive function is affected by air quality, a study has found for the first time.

Elderly people living in areas of high air pollution have brains that are 'three years older' as cognitive function is affected by air quality, a study has found for the first time.

Researchers found that elderly people did worse on thinking tests if they lived in areas with high levels of air pollution, compared to those in areas with relatively clean air.

The team from University of southern California presented their findings at the Gerontological Society of America's annual scientific meeting, in San Diego.

Postgraduate doctoral fellow Jennifer Ailshire conducted the analysis using data from the American Environmental Protection Agency and the Health and Retirement Study.

She said: "As a result of age-related declines in health and functioning, older adults are particularly vulnerable to the hazards of exposure to unhealthy air.

"Air pollution has been linked to increased cardiovascular and respiratory problems, and even premature death, in older populations, and there is emerging evidence that exposure to particulate air pollution may have adverse effects on brain health and functioning as well."

The study of 14,793 men and women aged over 50 matched their results on cognitive tests to maps of air pollution.

The association even remained after accounting for several factors, including age, race/ethnicity, education, smoking behavior, and respiratory and cardiovascular conditions.

Every ten micrograms of fine particle air pollution found per cubic meter was linked to a drop of a third of a point in cognitive scores.

Areas of low air pollution had 4.1 micrograms per cubic meter and areas with the worst had 20.7 micrograms.

The difference was the equivalent of ageing three years, Ms Ailshire said.

This was because one year increase in age was linked to a drop in cognitive scores of just over a tenth of a point.

相关阅读

意大利米兰污染严重禁车十小时

美国一小镇遭污染变“毒镇” 仅剩唯一住户

意大利八城市空气检测出毒品成分

(Agencies)

研究:空气污染使大脑衰老更快

(中国日报网英语点津 Helen 编辑)

 
中国日报网英语点津版权说明:凡注明来源为“中国日报网英语点津:XXX(署名)”的原创作品,除与中国日报网签署英语点津内容授权协议的网站外,其他任何网站或单位未经允许不得非法盗链、转载和使用,违者必究。如需使用,请与010-84883631联系;凡本网注明“来源:XXX(非英语点津)”的作品,均转载自其它媒体,目的在于传播更多信息,其他媒体如需转载,请与稿件来源方联系,如产生任何问题与本网无关;本网所发布的歌曲、电影片段,版权归原作者所有,仅供学习与研究,如果侵权,请提供版权证明,以便尽快删除。
 

关注和订阅

人气排行

翻译服务

中国日报网翻译工作室

我们提供:媒体、文化、财经法律等专业领域的中英互译服务
电话:010-84883468
邮件:translate@chinadaily.com.cn