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PARIS, June 25, 2015
TODAY'S PAPER » IN SCHOOL
Horn not ok
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expectancy, says study
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Road noise may cut life
Living in a neighbourhood with noisy road traffic
may reduce life expectancy and boost the risk
of stroke, doctors reported in a study on
Wednesday.
Researchers compared noise levels and data for
deaths and hospital admissions across London,
they said in a paper published in the European
Heart Journal.
In places where daytime road traffic noise
exceeded 60 decibels , there were four percent
more deaths than in quieter areas where the
noise was 55 decibels or below.
The World Health Organization (WHO) sets 55
decibels as the threshold of community noise
beyond which health problems are possible.
Residents of noisier areas were also five percent likelier to be admitted to hospital with a stroke -- a
figure that rose to nine percent among the elderly.
Significant night-time noise from road traffic, ranging from 55 to 60 decibels, was also linked to a fivepercent increased stroke risk, but only among the elderly.
The survey, led by Jaana Halonen from the London School of Hygiene and Tropical Medicine, covered
districts within the M25 motorway which rings the British capital. The study spanned 2003-2010.
More than 1.6 out of London's 8.6 million inhabitants are exposed to daytime traffic with noise above
55 decibels, it found.
Outside commentators said the increased health risk was small but clear.
The findings match other research showing that noise increases blood pressure and stress, which are
contributors to cardiovascular disease, they said.
"Public-health policies must pay more attention to this emerging evidence," Francesco Cappuccio, a
professor of cardiovascular medicine at the University of Warwick, told Britain's Science Media
Centre.AFP
http://www.thehindu.com/todays-paper/tp-in-school/horn-not-ok/article7351238.ece[25/06/2015 10:20:59]
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