Hearing Loss and Cognitive Health – What the Research Says About Dementia, Isolation, and Your Ears
How Hearing Loss May Affect the Brain
Researchers have proposed several pathways through which hearing loss may contribute to cognitive decline. These are not mutually exclusive — they likely work together.
🧠 Cognitive overload. When hearing is impaired, the brain works harder to decode speech and sounds. This constant effort draws resources away from other cognitive functions like memory and reasoning.
🔇 Reduced stimulation. The auditory cortex receives less input. Over time, brain areas that are not stimulated may weaken — a principle known as "use it or lose it."
🚪 Social withdrawal. Conversations become exhausting. Noisy environments feel overwhelming. Many people gradually avoid social situations, leading to loneliness and reduced mental stimulation.
😔 Depression and anxiety. Isolation, frustration, and the invisible nature of hearing loss contribute to higher rates of mood disorders. Tinnitus adds another layer of distress — a constant noise that others cannot hear or fully understand.
Where Tinnitus Fits In
Tinnitus and hearing loss are deeply connected — up to 90% of people with tinnitus also have hearing loss. But tinnitus adds its own burden on top of the hearing difficulty.
The constant ringing creates a background of low-level stress. It disrupts sleep, making fatigue worse. It makes concentration harder, adding to cognitive load. And because others cannot hear it, it can feel profoundly isolating — even when surrounded by people.
Published research suggests that managing tinnitus through sound therapy and habituation can reduce the associated anxiety and improve quality of life. When the emotional distress of tinnitus decreases, sleep improves, social engagement becomes easier, and the brain has more resources available for other tasks [4].
What You Can Do About It
The most encouraging takeaway from this research is that hearing loss is modifiable. Unlike some risk factors for cognitive decline, it is something you can address — and the earlier, the better.
Get a hearing test
If you are over 60, a baseline hearing test is a sensible step — even if you think your hearing is fine. Many people are surprised by the results. Early detection means earlier intervention.
Use hearing aids if recommended
The ACHIEVE study findings suggest that hearing aids may do more than help you hear — they may help protect cognitive function. If an audiologist recommends hearing aids, consider it seriously.
Add sound therapy for tinnitus
If you also have tinnitus, a sound therapy app can reduce the ringing's impact on sleep, concentration, and mood. It works alongside hearing aids as a complementary tool.
Stay socially active
Social engagement is one of the strongest protectors of cognitive health. With better hearing (through aids or assistive devices), social interaction becomes less exhausting and more enjoyable again.
Talk to your family
If hearing is becoming difficult, let the people around you know. Simple adjustments — facing you when speaking, reducing background noise, being patient — make a real difference. Your family wants to help, but they may not realise what you need unless you tell them. Our guide for families can help start that conversation.
Common Questions
The research shows a strong association, but not proven direct causation. Hearing loss is identified as the largest modifiable risk factor for dementia, meaning addressing it may reduce risk. However, dementia is influenced by many factors. Treating hearing loss is one important step, not a guarantee of prevention.
No. The ACHIEVE study included participants aged 70 to 84 and still found significant benefits. While earlier intervention is ideal, starting at any age can improve communication, reduce isolation, and support cognitive health.
Many people with tinnitus report difficulty concentrating and feeling mentally fatigued. The constant background noise uses cognitive resources that would otherwise be available for tasks like reading, following conversations, or remembering details. Managing tinnitus through sound therapy can free up some of those resources.
Hearing loss makes social interaction effortful. Over time, many people withdraw from conversations, gatherings, and activities they used to enjoy. This isolation, combined with the frustration of not hearing well, contributes to higher rates of depression and anxiety in older adults with untreated hearing loss.
Sound therapy is designed to manage tinnitus, not directly treat cognitive decline. However, by improving sleep, reducing anxiety, and making the ringing less bothersome, it can indirectly support better cognitive functioning. Less distress means more mental resources available for everyday tasks.
Take the First Step
If you have tinnitus, start managing it. If you have not had a hearing test, book one. And if a sound therapy app could help you sleep, focus, or feel calmer — try it tonight.
Download the AppSources
- Livingston G, Huntley J, Sommerlad A, et al. "Dementia prevention, intervention, and care: 2020 report of the Lancet Commission." The Lancet, 2020; 396(10248):413–446. doi:10.1016/S0140-6736(20)30367-6
- Lin FR, Pike JR, Albert MS, et al. "Hearing intervention versus health education control to reduce cognitive decline in older adults with hearing loss in the USA (ACHIEVE)." The Lancet, 2023; 402(10404):786–797. doi:10.1016/S0140-6736(23)01406-X
- Shukla A, Harper M, Pedersen E, et al. "Hearing Loss, Loneliness, and Social Isolation: A Systematic Review." Otolaryngology – Head and Neck Surgery, 2020; 162(5):622–633. doi:10.1177/0194599820910377
- Jastreboff PJ, Hazell JWP. Tinnitus Retraining Therapy. Cambridge University Press, 2004.
- World Health Organization. "Deafness and hearing loss: Key facts." who.int