If you have prediabetes, your risk for hearing loss is 30 percent higher compared with those who do not have diabetes. Two other things that can increase the chance that you’ll experience hearing loss are age and smoking.
So just why are people with diabetes at a higher risk for hearing loss? “We believe it’s years of poorly controlled blood sugar,” says Dr. Deena Adimoolam, an endocrinologist and assistant professor of diabetes, endocrinology and bone disease at the Icahn School of Medicine at Mount Sinai in New York.
In short, the effects of high blood glucose over time can damage your hearing. “Although the exact reason for diabetes-related hearing loss is unknown, it’s suspected that there are two major causes,” says Dr. Jagmeet S. Mundi, an ear, nose and throat specialist with Mission Hospital in Mission Viejo, California. “This includes damage to the small blood vessels that provide blood flow to the inner ear and direct nerve damage to the inner ear structures. The combination of the two leads to hearing loss in these patients.
For the most part, the symptoms of diabetes-related hearing loss will be like those of everyone else. One difference is that hearing professionals can track a consistent difference in the ability of those with diabetes to hear low- or middle-frequency sounds. However, that may not be something you notice. In fact, you may not detect any difference at all, at least not for a long time.
“People are notoriously bad at noticing the problem. It takes an extremely long time for people to blame [hearing loss] on themselves,” Konrad-Martin says.
It may be a loved one observing that your hearing is not that great anymore in certain situations, such as at a noisy restaurant or even in a quieter environment.
Other hearing loss symptoms include:
- Thinking that people talking are mumbling
- Not hearing when people speak directly to you
- Turning up the volume on devices frequently
- Speaking more loudly than necessary
- Increased sensitivity to loud noises (this also could be the sign of a condition called hyperacusis)
- A ringing sound in the ears (this also is associated with a hearing problem called tinnitus)
- Feeling as if you can hear what someone says, but it’s not as clear as you’d like. “Think of it like a picture going out of focus,” Konrad-Martin says.
Although hearing loss is common as you get older, hearing professionals often find that the degree of hearing loss in someone with diabetes is more severe than someone of the same age who does not have diabetes.