When people ask how to reduce their risk of dementia, the answers usually sound familiar.
Exercise more.
Eat a healthy diet.
Stay mentally active.
Manage blood pressure.
Get enough sleep.
These are all important habits for healthy aging. But there’s one risk factor that many people overlook—despite growing scientific evidence showing it may play a significant role in long-term brain health.
It’s your hearing.
In recent years, hearing loss has moved from being viewed as a simple inconvenience to becoming an important part of the conversation about healthy aging and cognitive health.
In fact, the 2024 Lancet Commission, an international panel of experts who reviewed decades of dementia research, identified hearing loss as the leading modifiable risk factor for dementia.
That’s a finding worth paying attention to.
What Does “Modifiable Risk Factor” Mean?
The phrase may sound technical, but the concept is simple.
Some dementia risk factors can’t be changed.
You can’t change:
- Your age.
- Your family history.
- Your genetics.
These are considered non-modifiable risk factors.
Other factors, however, can often be managed or treated.
These include things like:
- High blood pressure
- Diabetes
- Smoking
- Physical inactivity
- Vision loss
- Hearing loss
These are called modifiable risk factors because taking steps to address them may help reduce overall risk.
Importantly, this doesn’t mean treating hearing loss will prevent dementia. Rather, it means hearing health is one area where people have the opportunity to take proactive action.
Why Is Noise Induced Hearing Loss So Important?
For decades, hearing loss was considered a normal part of aging.
Many people believed it simply meant turning the television up louder or asking others to repeat themselves.
Today, researchers see a much bigger picture.
Hearing is not just about your ears.
It begins in the outer ear, travels through the middle ear, and depends on the inner ear converting sound signals so your brain can receive, process, and understand sound.
Every conversation requires your brain to:
- Recognize speech, though damage in the inner ear can interfere with the signals reaching the brain.
- Separate voices from background noise.
- Interpret language.
- Store information.
- Respond appropriately.
When hearing becomes less clear, your brain has to work significantly harder to complete these tasks.
Researchers believe this increased listening effort may be one of several reasons hearing loss is associated with cognitive decline.
The Brain Works Harder Than You Realize
Imagine trying to read a book with several words missing from every sentence.
You could probably figure out the story—but it would require much more concentration.
That’s similar to what many people experience with hearing loss.
Instead of receiving a complete sound signal, the brain is constantly filling in the missing pieces.
Many patients describe it this way:
“I’m exhausted after family dinners.”
“Restaurants aren’t enjoyable anymore.”
“I hear people talking—I just can’t understand them.”
This extra mental effort is known as listening effort, and researchers continue studying how years of increased listening effort may influence overall brain health.
Hearing Loss Can Change the Way People Live
One of the greatest impacts of untreated hearing loss isn’t physical—hearing loss can affect communication, relationships, and overall well being.
It’s social.
When conversations become difficult, many people begin withdrawing from situations they once enjoyed.
They may stop attending:
- Church services
- Community events
- Family gatherings
- Restaurants
- Volunteer activities
- Card games
- Social clubs
At first, these changes may seem small.
Over time, however, reduced communication can affect daily life, leading to loneliness, frustration, and decreased social engagement.
Because social interaction is important for cognitive health, researchers believe this may be another pathway linking hearing loss with dementia risk.
What the Lancet Commission Found
The 2024 Lancet Commission on Dementia Prevention, Intervention and Care reviewed evidence from around the world to identify factors that contribute to dementia risk.
Their conclusion was significant.
Among the modifiable risk factors they evaluated, hearing loss remained the largest potentially modifiable contributor—meaning it represents one of the areas where intervention could have the greatest impact.
This doesn’t mean hearing loss causes dementia.
Instead, it highlights hearing health as an important opportunity for earlier assessment, treatment, and support.
Why Waiting Isn’t a Good Strategy for Hearing Protection
One of the biggest challenges with hearing loss is that it develops gradually, which is especially common with age related hearing loss.
Older adults often adapt without realizing how much they’re missing.
Common thoughts include:
“I’m getting by.”
“Everyone mumbles these days.”
“It’s not bad enough yet.”
Unfortunately, hearing changes rarely improve on their own.
Waiting often means spending years asking your brain to work harder while communication becomes increasingly difficult.
The earlier hearing changes are identified, the sooner you can understand your options.
Can Treating Hearing Loss with Hearing Aids Help?
This is one of the most common questions patients ask.
Research continues to explore how hearing treatment influences long-term cognitive health.
Encouragingly, studies summarized in our research guide suggest that treating hearing loss may slow cognitive decline in certain higher-risk adults, and newer research has associated earlier hearing aid use with lower dementia risk in some populations. Hearing aids are also a common option for permanent hearing loss, especially sensorineural hearing loss. Severe hearing loss or profound hearing loss may call for cochlear implants, which stimulate the hearing nerve. Treatment depends on the type of hearing loss, with conductive hearing loss, mixed hearing loss, and sensorineural hearing loss each managed differently. While scientists continue to study these findings, one message is clear:
Addressing hearing loss offers benefits that go far beyond hearing better.
Patients often report improvements in:
- Communication
- Confidence
- Social participation
- Listening comfort
- Relationships
- Overall quality of life
Those improvements alone can make a meaningful difference in daily living.
Signs It’s Time for a Hearing Test or Evaluation
You don’t have to wait until sudden hearing loss happens or hearing changes affect one ear before seeking prompt evaluation.
Consider scheduling an evaluation if you:
- Frequently ask people to repeat themselves.
- Struggle in restaurants or noisy environments.
- Turn up the television volume.
- Experience ringing or buzzing in your ears.
- Feel mentally exhausted after conversations.
- Avoid social situations because hearing has become difficult.
- Notice hearing loss in one ear and want it checked promptly.
Early evaluation can help identify the type of hearing loss before it has a greater impact on your communication and quality of life.
Hearing Care Is Healthcare
At Audiology Associates, we believe hearing care is an essential part of healthy aging.
A comprehensive hearing evaluation looks beyond whether you can hear soft sounds.
It also considers how well you:
- Understand speech.
- Hear in background noise.
- Experience tinnitus.
- Communicate in everyday life.
- May benefit from additional cognitive screening when appropriate.
Our goal is to help patients understand not just how well they hear, but how hearing affects their overall health and independence.
The Bottom Line
When most people think about reducing their risk of dementia, hearing health isn’t usually the first thing that comes to mind.
But today’s research is changing that conversation.
The 2024 Lancet Commission identified hearing loss as the leading modifiable risk factor for dementia, highlighting the importance of recognizing hearing changes early, seeking appropriate care, and taking steps to prevent hearing loss by limiting exposure to loud noises and even a very loud noise, consistent with general disease control guidance.
While no single step can eliminate dementia risk, taking care of your hearing is one proactive way to support your overall health, stay connected with the people you love, and maintain the active lifestyle that keeps your brain engaged.
If you’ve noticed changes in your hearing, don’t ignore them.
The sooner you understand what’s happening, the sooner you can take steps to hear—and live—with greater confidence, including using hearing protection or ear protection around loud sounds such as
