Statistics from Shanghai municipal health department show that 20 percent of the patients suffering deafness are young people who often talk or listen to music through earphones for long time, the Shanghai Morning Post reported.

Tests show that a passing-by subway train can produce a noise of 100 decibels. If someone is happening to be talking through earphones, the sound gets to his ears can amount to 120 decibels or more. He could not hear anything the moment he stopped talking.

To avoid hearing damage, experts advise people take off earphones after one-hour wearing, and have a rest for at least ten minutes.

(China.org.cn March 5, 2012)

據《上海新聞晨報》報道，上海市衛生部門發布的數據顯示，在耳聾患者中，有20%的是長時間用耳機通話或聽音樂的年輕人。

測試顯示，地鐵列車通過時產生的噪音達100分貝，如此時有人正好在用耳機通話，入耳的聲音就會達到120分貝以上。在停止通話的一瞬間往往會感覺不到周邊的聲音。

為避免聽力受損，專家建議人們每戴一小時耳機就將其取下來，并休息至少10分鐘。