When hearing loss is left untreated, the brain works harder to process environmental sounds and speech. This extra effort, often called cognitive load, can leave fewer mental resources available for memory, thinking, and understanding conversations.
Large studies have also found a significant link between hearing loss and cognitive decline. Research following thousands of adults has shown that untreated hearing loss in mid-life is a leading modifiable risk factor for dementia (Dementia prevention, intervention, and care: 2020 report of the Lancet Commission).
Reassuringly, treating hearing loss can help support brain health. A major clinical study found that older adults who used hearing aids experienced almost 50% slower cognitive decline over three years compared with those who did not receive hearing treatment (Hearing aids slow cognitive decline in people at high risk: 2023, National Institutes of Health).
There are several reasons for why better hearing can have this effect:
- Reducing the mental effort required to listen
- Keeping the brain’s auditory pathways active
- Encouraging social interaction and conversation
If you’ve noticed changes in your hearing, or if your family and friends have commented on your hearing, a hearing test is an important step. Treating hearing loss doesn’t just improve communication, it can also help keep your brain active and engaged!
