Nighttime Airplane Noise Linked to Cardiovascular Death
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Individuals uncovered to nighttime airplane noise could also be at elevated danger for dying from heart problems inside as little at 2 hours of noise publicity, new analysis suggests.

A group of Swiss investigators analyzed virtually 25,000 deaths from cardiovascular causes amongst people residing near Zurich Airport (ZRH) and located that plane noise contributed to roughly 3% of all cardiovascular deaths.

Specifically, the danger for cardiovascular dying elevated by 33% when nighttime noise ranges had been between 40 and 50 dB and by 44% with noise ranges above 55 dB.

We found that aircraft noise contributed to about 800 out of 25,000 cardiovascular deaths that occurred between 2000 and 2015 in the vicinity of Zurich airport. This represents three percent of all observed cardiovascular deaths," said corresponding author of the study.

According to him, the results are similar to the effects that emotions such as anger or excitement have on cardiovascular mortality. "This is not so surprising, as we know night-time noise causes stress and affects sleep," he added. The night-time noise effect was more pronounced in quiet areas with little railway and road traffic background noise and for people living in older houses, which often have less insulation and are thus more noise-prone.

The study used a case-crossover design to evaluate whether aircraft noise exposure at the time of a death was unusually high compared to randomly chosen control time periods. "This study design is very useful to study acute effects of noise exposure with high day-to-day variability such as for airplane noise, given changing weather conditions or flight delays," said first author of the study. "With this temporal analysis approach, we can isolate the effect of unusually high or low levels of noise on mortality from other factors. Lifestyle characteristics such as smoking or diet cannot be a bias in this study design."

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