When people think about hearing loss, they often think about the ears. Yet, hearing doesn’t end there. Hearing loss happens in the brain. Thus, hearing loss and brain function are closely intertwined. Just like the brain adapts away from processing sound, it seems that with the help of hearing aids, it can adapt to receiving sound input again.
One University of Colorado Boulder study found that six months of consistent hearing aid use was associated with more typical brain activity, cognitive improvements, and better hearing. The study does not prove that hearing aids reverse hearing loss but rather shows the brain’s ability to change function after auditory input is restored with hearing aids.
Key Takeaways
- Untreated hearing loss may lead to changes in brain function.
- Once hearing aids restore auditory input, the brain slowly adapts to hearing again.
- Wearing hearing aids consistently helps neural reorganization.
How Does Hearing Loss Affect Brain Function?
When hearing loss occurs, brain functions change. The parts of the brain responsible for hearing adapt to less audio input. And as a result, they are often recruited to process other senses like vision. The brain’s incredible ability to adapt like this is called neuroplasticity.
However, it appears as though neuroplasticity can work in the opposite direction as well. A small study showed how the consistent use of hearing aids causes the brain to slowly adapt to auditory input again with the assistance of these devices.
What Did the University of Colorado Study Find?
A study at the University of Colorado found that brain activity, speech perception, and cognitive function can change after six months of consistent hearing aid use. The study included 28 individuals with hearing loss and 13 without. High-density electroencephalogram (EEG) was used to record brain activity.
Researchers found that over time, brain activity in those with hearing loss slowly shifted toward what researchers observed in the normal-hearing group, suggesting more typical functional organization after access to sound was restored.
Researchers reported that 90% of participants improved on the executive-function measure, 81% improved in processing speed, and 71% improved in both global cognitive function and visual working memory. Speech understanding in noise improved significantly as well.
This study does not prove that hearing aids reverse brain atrophy. Instead, it shows the brain’s ability to change function after auditory input is restored with hearing aids. While this study was small, it is very encouraging for those with hearing loss.
Why Does Wearing Hearing Aids Every Day Matter?
The brain needs time and repeated exposure to sound to relearn how to use it effectively. Neuroplasticity doesn’t happen overnight. Thus, wearing hearing aids consistently helps the brain restore its hearing processes. This means not just wearing your hearing aids when you think you need them.
It’s like going to the gym for your auditory system. After some practice, the brain slowly begins to identify audio information like voices, footsteps, or beeping cars. This may take a while, especially if hearing loss has been present for some time. In the study, participants wore their devices for an average of 9.8 hours a day for six months.
Get the most out of your hearing aids.
A hearing care professional can make sure your devices are fitted and programmed for you, so wearing them every day feels natural and keeps you connected to what matters most.
Quick Answers About Hearing Loss and Brain Function
What happens to your brain when you start wearing hearing aids?
Your brain begins to hear sounds again that may have been unclear or missing. However, it takes time for it to adjust to this renewed auditory stimulation. In the University of Colorado study, 21 consistent hearing aid users showed more typical brain-activity patterns and better speech perception after six months. Wear your devices as recommended for the best benefit.
How long does it take for hearing aids to help the brain?
The brain begins adjusting immediately, but listening benefits may develop over months. After prolonged hearing loss, the brain needs repeated exposure to meaningful sounds to learn how to process them again. Measurable changes appeared after six months among study participants averaging 9.8 hours of daily use. Consistent wear and professional follow-up can help support your adjustment.
Can hearing aids reverse brain damage from hearing loss?
No research has established that hearing aids reverse brain damage or hearing loss. The Colorado study found changes in functional brain activity, not a reversal of structural atrophy. Its final analysis included only 21 hearing-aid users. Scheduling a comprehensive hearing evaluation will allow an audiologist to provide insight into what solutions can support your hearing.
Does wearing hearing aids slow cognitive decline?
Hearing care may slow cognitive decline for some higher-risk adults, but the benefit has not been shown equally in everyone. In the ACHIEVE trial, there was no significant effect across all 977 participants, but cognitive decline slowed by 48% in one higher-risk subgroup. Though the result is unclear, treating hearing loss can support many factors that might contribute to cognitive decline.
How Can HearingLoss.com Help?
HearingLoss.com can help you take the next step on your hearing journey. Take the online hearing screener to identify possible hearing concerns and then find a trusted provider near you for a comprehensive evaluation. An audiologist at Central Florida Audiology can help you determine the type of hearing loss, explore solutions, and determine if hearing aids are right for you. With time, better hearing is possible.
References
- Glick H, Sharma, A. Cortical Neuroplasticity and Cognitive Function in Early-Stage, Mild-Moderate Hearing Loss: Evidence of Neurocognitive Benefit From Hearing Aid Use. Frontiers in Neuroscience. 2020. https://www.frontiersin.org/journals/neuroscience/articles/10.3389/fnins.2020.00093/full. Accessed August 28, 2026.
- Lin F, et al. Hearing Intervention Versus Health Education Control to Reduce Cognitive Decline. The Lancet. 2023. https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(23)01406-X/abstract. Accessed August 28, 2026.
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