Hearing Loss in Teens Is on the Rise
Study Shows 1 in 5 Teenagers Has Signs of Hearing Loss
Aug. 17, 2010 -- Hearing loss in teens has gone up, with one in five U.S. adolescents showing some degree of hearing loss in 2005-2006, according to a new study.
Researchers compared hearing loss evaluated in two national surveys, one conducted in 1988-1994 and the other in 2005-2006. ''In the initial assessment back in the early '90's, about 15% [of teens] had any hearing loss," says researcher Gary C. Curhan MD, ScD, associate professor of medicine and epidemiology at Harvard Medical School and Harvard School of Public Health.
''More recently, it was 19%," he says.
''On a relative basis, that's about 30% higher," he tells WebMD. "Previously, one in seven children would have been found to have hearing loss. Now it's one of five."
The majority of the hearing loss found was slight, Curhan and his colleagues found. But, Curhan says, "any hearing loss is bad."
The study is published in the Journal of the American Medical Association.
Updating Data on Teen Hearing Loss
Curhan and his colleagues compared data from two surveys: the Third National Health and Nutrition Examination Survey (NHANES III) and NHANES 2005-2006.
The earlier survey included data from 2,928 participants; the second had data from 1,771 participants, all ages 12 to 19.
The earlier survey didn't include data on exposure to loud noise for five or more hours a week, but the later study did. In the 2005-2006 survey, 29% of respondents said they were exposed to such noise. But the researchers did not find a significant link between that and hearing loss.
Children from families below the federal poverty level did have a higher risk of hearing loss -- they were 1.6 times more likely than children from families above the poverty threshold to have hearing loss. While about 23% of children from the poorer families had hearing loss, about 18% of those in families above the poverty threshold did.
High-frequency hearing loss, which often occurs from noise exposure, was higher in the second survey than the first, the researchers found.
Even slight hearing loss in school-aged children can create a need for speech therapy and other special help, the researchers say. Mild loss can interfere with speech and language development, school performance, and impair social and emotional development.