Prevalence of hearing impairment is high in patients with diabetes, finds study published in Journal of Clinical Endocrinology and Metabolism. Study authors note that the finding is likely to be independent of the effect of aging or a noisy environment.
The number of those with impaired hearing more than doubled in the period from 1995 to 2004. Epidemiologically, several health problems in relation to hearing impairment have been reported such as depression and dementia. Recently several studies have investigated the relationship between diabetes and hearing impairment but their findings were inconsistent.
"The association of hearing impairment with diabetes is controversial, but it is believed that over time, high blood glucose levels can damage vessels in the stria vascularis and nerves diminishing the ability to hear," said Chika Horikawa, RD, MSc, of Niigata University in Japan and lead author of the study. "In our study we found that persons with diabetes had more than two times higher prevalence of hearing impairment than those without diabetes."
"Our results propose that diabetic patients be screened for hearing impairment from earlier age compared with non-diabetics, from the viewpoint of prevention of several health problems such as depression and dementia caused by hearing impairment," notes Horikawa.