医学新闻翻译1

Studies link air pollution as risk factor for anxiety and trigger for stroke

（关于空气污染成为焦虑症的风险因素和中风的诱因的调查）

Research into new questions about links between mental health and air quality has found an association between levels of anxiety and levels of fine particulate air pollution.

A second paper in the same issue of The BMJ answers more established questions about links with stroke, too. （在新问题研究中，在人们的焦虑水平与空气污染可吸入颗粒物的水平之间发现了心理健康和空气质量之间的联系。在同一期《英国医学杂志》的第二个报告提出来更的与中风相关联的疑问。）

Using information from the large amounts of data collecting in the 2004 Nurses' Health Study, the researchers looked back for a link to anxiety from an estimate of exposure to air pollution among the 71,271 women.

Residential proximity to a major road and average past exposures to fine and coarse particulate matter were modeled and found to be associated with increased anxiety symptoms.

（通过使用在2004年的护士健康研究中收集到的大量的数据信息，研究者回顾71271名女性暴露在空气污染与其患焦虑症的联系，发现了住宅靠近主要道路和过去的平均接触细和粗颗粒物与焦虑症状有关。）

Among the nurses who responded to the questionnaire, 15% experienced high levels of the following symptoms: （参与调查问卷的护士中,15%有以下症状:）

▪Fearfulness 恐惧

▪Desire for avoidance 渴望逃避

▪Tendency to worry. 忧虑倾向

This is similar to the level in the general population cited by the publishers of the study: "Anxiety is the most common psychiatric disorder and globally affects around 16% of people at some point in life."

The study, by Melinda Power, ScD, and co-authors, found a significantly increased odds of increased anxiety being found in women who had higher exposures to air pollution - specifically, to the fine particulate type.

（这类似于普通人群的水平的被出版商的研究说道:“焦虑症是最常见的精神疾病,全球大约16%的患者在焦虑中生活。”在研究中,梅林达电力、南加利福尼亚和合作者,发现了一个显著增加焦虑症发生几率的原因。暴露在空气污染——特别是细颗粒的类型的女性被发现焦虑症的几率更高。）

No link was observed for coarse particulate air pollution, however. (The study examined two levels of particulate matter - fine particles, less than 2.5 microns in size - PM <2.5 μm - or coarse particles, PM 2.5-10.0 μm.)

Women who lived between 50 and 200 meters from a major road were more likely to have higher anxiety symptoms than women living either further away from or closer to a major road. The link to anxiety was not observed for distances of over 200 m or for women living within 50 m of a major road.

（然而研究没有观察粗微粒空气污染(颗粒物的研究两个层次——微粒,小于2.5微米大小,点< 2.5μm——或粗颗粒,PM 2.5 -

-10.0μm。)的关联。住在离一个主要道路50到200米远的女性比其他远离主要的道路的女性更有可能有较高的焦虑症状生活。有关焦虑的研究没有观察在距离的要道路超过200米或50米内生活的女性。）

The anxiety association was dependent on levels of exposure and was found to be stronger if the exposure to air pollution was recent.

The link to particulates was stronger a month immediately before the anxiety scores, compared with a weaker association against the longer-term measures of exposure at 3 months, 6 months, 1 year and 15 years.

（焦虑协会依赖于空气污染暴露的程度,如果最近暴露在空气的污染变得更强，就会被发现。与长期即3个月,6个月、1年和15年暴露相比，较强的一个月前的焦虑分数。）

An editorial accompanying the anxiety study, which also comments on the stroke study, cites a possible biological explanation for the association with mental health: "Since air pollution causes systemic inflammation, it is reasonable that researchers have now turned to the arena