Noise pollution damages physical and psychological health

https://www.citylab.com/equity/2015/11/city-noise-mental-health-traffic-study/417276/

Linda Poon
Nov 25, 2015

Increasingly, health researchers are realizing that noise pollution is more than just a nuisance. A 2012 study found that exposure to the sounds of car traffic can raise the risk of heart attack in people over 50. A more recent study reported that it increases the risk of obesity. Still other work has linked city noise to impaired sleep.

But while these and other studies identify the effects of traffic noise on our bodies, few have looked at how it impacts our minds. New research, published in Environmental Health Perspectives, does just that—providing strong evidence that noise pollution is indeed a mental health problem. The study found that people living in areas with high traffic noise were 25 percent more likely than those in quieter neighborhoods to have symptoms of depression, even when adjusting for socioeconomic factors.

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Orban adds that the link between noise and depression remains strong even after controlling for income and occupational status, which suggests the effect of noise on depression may be independent of monetary factors.

The researchers also saw a stronger correlation with depressive symptoms among those who reported sleep disruptions like insomnia in the first survey, suggesting that impaired sleep is a possible gateway to depression.

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Researchers have evidence that noise leads to anxiety, and that it causes the release of the stress hormone cortisol

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