(WASHINGTON) -- Twenty to 40 percent of adults older than 50 -- and more than 80 percent of adults older than 80 -- show some evidence of hearing loss. It can negatively affect a person's quality of life and the ability to live independently.
Even so, on Monday the U.S. Preventive Services Task Force posted a final guideline for hearing-loss screening in older adults. In contrast to its 1996 guidelines, which recommended asking all older patients about hearing, the Task Force now says it can't recommend for or against it in patients not complaining of hearing loss.
"The Task Force recognizes this is important and common," Dr. Albert Siu, vice co-chairman of the Task Force, said. "We also know for people who complain of problems with their hearing, hearing aids can be beneficial. However, we don't believe there is sufficient evidence that older adults who don't have complaints should be screened."
The recommendations from the USPSTF are often used by doctors to determine what screening tests they should be conducting on certain patients. Time, costs, the balance between risks and benefits, and study findings determine whether or not screening tests are recommended.
"Guidelines are important for the purpose of deciding what is the best way to practice," said Dr. Hamid Djalilian, director of neurotology at the University of California, Irvine. "This guideline doesn't provide a recommendation one way or the other."
When it comes to screening for hearing loss, the tests are simple and can be performed in the office in just seconds. So on the surface, it may seem like a slam dunk for a recommended test.
That being said, the costs of additional testing and hearing aids, which generally aren't covered by Medicare, can be very expensive. Moreover, many hearing loss experts agree that there simply is not enough research in the area to make a solid recommendation on the tests.
Still, the impact of hearing loss on day-to-day living can be profound.
"Hearing loss may mimic dementia or depression and can lead to social isolation," said Dr. Jennifer Smullen at the Massachusetts Eye and Ear Institute.
And Dr. Frank Lin, a hearing-loss expert at Johns Hopkins Center on Aging and Health, said hearing loss could not only mimic dementia but even mild hearing loss could double the risk of dementia.
"We are increasingly recognizing that hearing loss in older adults is associated with real, detrimental consequences on poorer cognitive functioning and the risk of dementia," Lin said. "We don't know yet if treating hearing loss could have an effect on these outcomes, but hearing loss screening and treatment are interventions that carry essentially no risk."
Copyright 2012 ABC News Radio