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The near-constant sound of loud airplanes puts older people at greater risk for heart problems, according to a Harvard study.
Researchers looked at data from 6 million elderly people with cardiovascular disease in October of 2013.
They found people living in neighborhoods near airports were admitted to the hospital for heart issues at a rate three and a half percent higher than other zip codes.
Noise has been shown to cause stress reactions and increase blood pressure which are risk factors for heart disease.