Air Pollution May Contribute to Anxiety, Stroke Risk

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Air Pollution May Contribute to Anxiety, Stroke Risk
Air Pollution May Contribute to Anxiety, Stroke Risk

HealthDay News — Air pollution may have an ill effect on both physical and mental health, according to two new studies published March 24 in The BMJ.

In one, researchers confirmed a long-studied connection between air pollution and cardiovascular health. In the analysis of 103 previous studies spanning 28 countries, overall, there was a "clear association" between air pollution and people's short-term risk of having or dying from a stroke.

For the second study, researchers used data from a long-term health study of 71,271 U.S. women aged 57 to 85. The women were asked some standard questions about anxiety symptoms — looking at whether they had certain phobias or tended to be worriers in general. Overall, 15% showed "high symptoms" of anxiety. The researchers then estimated the women's exposure to air pollution based on where they lived.

In general, the study found, the women's risk of anxiety symptoms increased along with their exposure to fine particle pollution. Those particles are released into the air when fossil fuels are burned, so car exhaust and industrial sources, such as power plants, are big contributors.


  1. Shah ASV et al. BMJ. 2015; doi:10.1136/bmj.h1295.
  2. Power MC et al. BMJ. 2015; doi:10.1136/bmj.h1111.
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