Health

Possible correlation between diabetes and hearing loss

New research confirms a long-suspected connection, though it is still too soon to start auditory screening for diabetics.

By Victoria Stagg Elliott — Posted March 15, 2004

Print  |   Email  |   Respond  |   Reprints  |   Like Facebook  |   Share Twitter  |   Tweet Linkedin

The link between diabetes and auditory decline has long been hypothesized. Now, preliminary findings indicate that people with this illness show signs of hearing loss at younger ages than those without it.

"There are so many microvascular and neuropathic complications with diabetes," said Nancy Vaughan, PhD, lead author and a research investigator at the Dept. of Veterans Affairs National Center for Rehabilitative Auditory Research in Portland, Ore. "It just seems logical that there should be some effect on hearing." The study was presented in February at the midwinter meeting of the Assn. for Research in Otolaryngology in Daytona Beach, Fla.

Diabetes experts have long thought that the same kind of destruction wrought by the illness on the kidneys, eyes, heart and nerves may also be occurring in the auditory system. Several epidemiological studies have suggested that hearing loss may also be more common in this population.

"In retrospect, this may explain why we give people directions and they just don't follow them," said James Mulinda, MD, chief of the diabetes and endocrinology section at Pennsylvania Hospital in Philadelphia. "Maybe they didn't hear half of what you said."

Those who focus on this question, however, have struggled to separate diabetes-related decline from the diminishing function that could be related to age or cardiovascular problems -- both of which are also common in this patient group.

Dr. Vaughan's team tested the auditory function of nearly 700 veterans with and without the disease. They found that for those younger than 60 with diabetes, hearing loss was more severe than for the same age group without diabetes. Differences in those 60 and older were not statistically significant at most frequencies. They concluded that diabetics' auditory system may grow older faster and that past a certain age hearing loss may be obscured by the aging process.

"If you're under 60 and diabetic, you're more likely to have hearing loss," said Dr. Vaughan. "But we don't know yet what this means in terms of all the other factors that need to be considered, such as heart and vascular disease. There's a long way to go, but we have some really solid evidence that there are differences."

Researchers and other experts suggested that this study may lead to an eventual role for auditory screening for diabetics. Specifically, it could become a useful measure of neuropathy for which there is yet no good screening test. It could also serve as an indication that the disease is not as well-controlled as it should be.

"We're probably going to find that it makes sense to screen diabetics early for very high frequency hearing loss," said Sujana Chandrasekhar, MD, director of otology and neurotology at Mount Sinai School of Medicine in New York. "These aren't necessarily frequencies that pertain to how we appreciate environmental sound, but they may be precursors that tell us this person needs to be in better control."

Others maintained that while the data, which were in the form of an interim analysis, were interesting, it was far too soon for diabetics to start being concerned about their hearing. Findings should be finalized by the end of this month.

"It's an interesting study, and it's preliminary data, but it's certainly not at a point where it would cause any change in care or the need for further tests," said Nathaniel Clark, MD, national vice president for clinical affairs at the American Diabetes Assn.

Some did say that possible concerns about hearing should be one more reason for diabetics to better control their disease and for those who don't to work towards prevention.

"If we could convince people of the multiple implications of this disease on their entire function, I think they'd deal with it differently," said Dr. Vaughan.

Back to top


ADDITIONAL INFORMATION

Diabetes and deafness

Objective: Determine the prevalence of hearing problems in veterans with diabetes.

Participants: Nearly 700 diabetic and nondiabetic veterans ages 25-85.

Method: Subjects filled out questionnaires about their health and had their hearing assessed. Those with diabetes had their HbA1C and glucose levels tested. They were also checked for peripheral neuropathy.

Results: Among those younger than 60, those with diabetes on average had poorer pure tone thresholds than those without the disease. Those 60 and older had poorer thresholds at 10.0 kHz and 12.5 kHz but their hearing, overall, was comparable to those without the disease.

Conclusion: Central auditory functions are affected by diabetes.

Source: Study by the National Center for Rehabilitative Auditory Research, Dept. of Veterans Affairs, presented at the Assn. for Research in Otolaryngology, Feb. 21-26

Back to top


External links

Assn. for Research in Otolaryngology, abstracts from the annual midwinter meeting, Feb. 21-26, in pdf (link)

"Diabetes and Hearing Loss, Exploring Connections," Hearing Health, Fall 2003 (link)

Back to top


ADVERTISEMENT

ADVERTISE HERE


Featured
Read story

Confronting bias against obese patients

Medical educators are starting to raise awareness about how weight-related stigma can impair patient-physician communication and the treatment of obesity. Read story


Read story

Goodbye

American Medical News is ceasing publication after 55 years of serving physicians by keeping them informed of their rapidly changing profession. Read story


Read story

Policing medical practice employees after work

Doctors can try to regulate staff actions outside the office, but they must watch what they try to stamp out and how they do it. Read story


Read story

Diabetes prevention: Set on a course for lifestyle change

The YMCA's evidence-based program is helping prediabetic patients eat right, get active and lose weight. Read story


Read story

Medicaid's muddled preventive care picture

The health system reform law promises no-cost coverage of a lengthy list of screenings and other prevention services, but some beneficiaries still might miss out. Read story


Read story

How to get tax breaks for your medical practice

Federal, state and local governments offer doctors incentives because practices are recognized as economic engines. But physicians must know how and where to find them. Read story


Read story

Advance pay ACOs: A down payment on Medicare's future

Accountable care organizations that pay doctors up-front bring practice improvements, but it's unclear yet if program actuaries will see a return on investment. Read story


Read story

Physician liability: Your team, your legal risk

When health care team members drop the ball, it's often doctors who end up in court. How can physicians improve such care and avoid risks? Read story

  • Stay informed
  • Twitter
  • Facebook
  • RSS
  • LinkedIn