US research says environmental noise may increase cardiovascular risk
US research says environmental noise may increase cardiovascular risk
November 09, 2018 Source: Xinhua News Agency
Window._bd_share_config={ "common":{ "bdSnsKey":{ },"bdText":"","bdMini":"2","bdMiniList":false,"bdPic":"","bdStyle":" 0","bdSize":"16"},"share":{ }};with(document)0[(getElementsByTagName('head')[0]||body).appendChild(createElement('script')) .src='http://bdimg.share.baidu.com/static/api/js/share.js?v=89860593.js?cdnversion='+~(-new Date()/36e5)];A preliminary study by the US team showed that environmental noise may increase the risk of heart disease and stroke.
The study, which will be released at the annual meeting of the American Heart Association, said that environmental noise may activate brain activity associated with stress response, thereby increasing vascular inflammatory responses, thus long-term exposure to people with high levels of noise such as roads or airports. The risk of cardiovascular disease increases.
Aza Ladfa, a researcher at the Massachusetts General Hospital in the United States, said that more and more studies have shown that environmental noise is related to cardiovascular disease, but the physiological mechanism behind it is still unclear.
The study selected 499 people without cardiovascular disease or cancer as subjects, and their mean age was 56 years. The researchers performed brain and cardiovascular scans on them to observe the amygdala activity associated with stress regulation and emotional response in their brains. After 5 years of follow-up, 40 of them suffered from cardiovascular disease.
The researchers used the subject's home address to obtain noise data for their living environment based on the US Department of Transportation's air and road noise map. The results showed that subjects with the highest exposure to noise had the highest levels of amygdala activity and the most obvious vascular inflammatory response, and these people were more than three times more likely to have major cardiovascular diseases such as heart disease or stroke than subjects with the lowest exposure to noise.
Studies have shown that even after excluding other risk factors such as air pollution, high cholesterol, smoking and diabetes, the risk of the high noise group is still higher than that of the low noise group.
Researchers say that reducing noise will substantially reduce the risk of cardiovascular disease requires further study, but clinicians should use long-term high levels of environmental noise as an independent risk factor for cardiovascular disease.
The 2018 American Heart Association Annual Meeting will be held in Chicago from November 10th to 12th.
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