Life near a highway can be loud and unhealthy

by Daniel Fink, MD, Chair, The Quiet Coalition

Photo credit: FOX ^.ᆽ.^= ∫:

Felix Poon of New Hampshire Public Radio recently answered a question about noise pollution for a man named Zach, who has two young daughters and lives near a highway in Minneapolis. In his answer, Poon interviewed Erica Walker from Brown University’s Community Noise Lab. Walker is also a member of the Quiet Communities Scientific Advisory Council.

Walker has been doing research assessing stress levels from noise exposure by measuring cortisol levels in fingernail clippings. Walker found that fingernails from people in rural areas have less cortisol than fingernails from people living in urban areas. Her research has not been completed yet, and she isn’t sure if the difference is from noise stress or multiple other factors.

However, a recent study confirmed that chronic exposure to road traffic noise is bad for the heart.

Walker mentioned using a noise masking system, but another recent study showed that pink noise masking might not be as effective as desired. The study showed that earplugs were better for sleep, but The New York Times’ Wirecutter product recommendation service warns against wearing earplugs every night.

So what should Zach from Minneapolis do? I think he should install sound insulation, double-paned windows, plants or a wall as tall as allowed by the building code between his property and the highway. But he should also contact the relevant local authorities about enforcing laws that limit exhaust, horns and engine braking.

Noise pollution from internal combustion engines is accompanied by dangerous particulate and gaseous emissions, so if Zach’s family can afford to move away from the highway, they should.