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WHO: 1.1 billion people at risk of hearing loss

The World Health Organization has a warning: 1.1 billion teenagers and young adults are at risk of hearing loss due to listening to their music too loud and spending too much time in noisy venues.

WHO analyzed data from studies in "middle- and high-income countries" and found that almost 50 percent of people between 12-35 are exposed to unsafe sound on their personal audio devices, and 40 percent are exposed to potentially damaging levels of sound at bars, nightclubs, sporting events, and other entertainment venues. "As they go about their daily lives doing what they enjoy, more and more young people are placing themselves at risk of hearing loss," Dr. Etienne Krug, WHO director for the Department for Management of Noncommunicable Diseases, Disability, Violence and Injury Prevention, said in a statement. "They should be aware that once you lose your hearing, it won't come back. Taking simple preventative actions will allow people to continue to enjoy themselves without putting their hearing at risk."

WHO recommends that the highest permissible level of noise exposure in the workplace is 85 decibels up to a maximum of eight hours per day, and 100 decibels for no more than 15 minutes in venues like bars and clubs. Young people are also advised to wear earplugs in noisy establishments.