The numbers are similar -- is there a link?
Yes, says the National Institute of Health (NIH). In fact, the NIH has found that hearing loss is twice as common in people with diabetes as it is in those who don't have the disease. Also, of the 79 million adults thought to have pre-diabetes, the rate of hearing loss is 30% higher than in those with normal blood sugar.
Hearing depends on small blood vessels and nerves in the inner ear. Researchers believe that, over time, high blood glucose levels can damage these vessels and nerves, diminishing the ability to hear.