Hearing Loss and Diabetes: An Overlooked Connection
Hearing loss is around twice as common in people with diabetes, and it's not on most screening lists.
This connection is well documented and almost never mentioned at a diabetes appointment.
The association
Hearing loss is roughly twice as common in people with diabetes as in those without, and elevated rates have also been observed in people with prediabetes.
The likely mechanism is the same as elsewhere: the inner ear depends on a rich supply of very small blood vessels and on delicate nerve function, both of which are vulnerable to sustained elevated glucose. It's the same process that affects the eyes, kidneys and feet — applied to a structure nobody thinks to check.
Why it gets missed
It's gradual, so people adapt rather than notice.
It isn't on the standard checklist. Eyes, feet and kidneys are screened routinely in diabetes care. Hearing generally isn't.
It's attributed to age, which is often partly true and doesn't rule out the metabolic contribution.
Signs worth acting on
- Asking people to repeat themselves more often
- Difficulty following conversation in a noisy room — often the first sign
- Turning the television up more than others prefer
- Ringing in the ears
- Feeling that people mumble
That third-to-last one is the classic early indicator: hearing in quiet is fine, hearing in a restaurant isn't.
Why it's worth acting on
Untreated hearing loss carries consequences beyond the hearing itself. It's associated with social withdrawal, and there's a growing body of evidence linking it to cognitive decline — with some evidence that treating it may reduce that risk.
Hearing aids are also dramatically better and less conspicuous than they were, and over-the-counter options now exist in some markets for mild to moderate loss.
What to do
Ask for a hearing test if any of the signs apply. It's quick, non-invasive and widely available.
Mention your diabetes, since it changes how the result is interpreted.
Protect what you have — hearing protection around loud tools and equipment.
Glucose control, which is the modifiable piece of the mechanism.
Try this week: if you struggle to follow conversation in restaurants, book a hearing test. It's the sign most people ignore for years.
Education, not medical advice. Hearing changes should be assessed by an audiologist or your doctor.