Danish Study Links 11.5dB Road-Noise Rise to 3% Higher Parkinson's Risk
Updated
Updated · The Guardian · Jul 29
Danish Study Links 11.5dB Road-Noise Rise to 3% Higher Parkinson's Risk
3 articles · Updated · The Guardian · Jul 29
Summary
More than 3 million Danes tracked over 18 years showed Parkinson’s risk rose 3% for every 11.5-decibel increase in road noise, adding a new neurological link to traffic exposure.
The finding extends evidence that noise pollution harms health through stress and sleep disruption, not just annoyance, and points to road traffic as a major chronic exposure source.
110 million Europeans face harmful noise levels, according to the European Environment Agency, which has tied the pollutant to 66,000 early deaths a year as well as heart disease, diabetes and depression.
A 2023 UK parliamentary report called noise a neglected pollutant, while exposure remains unevenly distributed across poorer and minority neighborhoods and can hit noise-sensitive people especially hard.
China’s use of sound barriers, quieter road surfaces and other engineering measures suggests traffic noise can be reduced, underscoring that urban noise is not an unavoidable byproduct of city life.