Op-Ed Contributor - Now Don’t Hear This - NYTimes.com

Op-Ed Contributor - Now Don’t Hear This - NYTimes.com: "The scale of our noise problem isn’t in doubt. In recent years rigorous studies on the health consequences of noise have indicated that noise elevates heart rate, blood pressure, vasoconstriction and stress hormone levels, and increases risk for heart attacks. These reports prove that even when we’ve become mentally habituated to noise, the damage it does to our physiologies continues unchecked.

Studies done on sleeping subjects show that signs of stress surge in response to noise like air traffic even when people don’t wake. Moderate noise from white-noise machines, air-conditioners and background television, for example, can still undermine children’s language acquisition. Warnings about playing Walkmans and iPods too loudly have been around for years, but some experts now believe that even at reasonable volumes a direct sound-feed into the ears for hours on end may degrade our hearing."