World Alzheimer’s Day is observed every September 21st. It is a date that reminds us of the importance of better understanding this disease and paying attention to factors that directly influence our cognitive health.
As a hearing care professional, there is one aspect I consider especially important in my daily work: the link between hearing loss and cognitive decline.
In recent years, various studies have found an association between untreated hearing loss and an increased risk of cognitive decline and dementia. This does not mean that a person with hearing loss will inevitably develop Alzheimer’s, nor that hearing aids can prevent or cure the disease.
What we do know for certain in audiology practice is that taking care of your hearing helps maintain good communication. When we hear well, we reduce social isolation, improve our mood, and make it easier to participate in daily activities. Ultimately, keeping the brain active and stimulated through sound is a way to protect it.
That is why, when an older adult begins to notice difficulty following conversations—especially in noisy environments like restaurants or family gatherings—my advice is not to ignore it. I recommend getting an annual hearing check-up as a preventive measure. A quick, painless test can make a huge difference to your well-being and peace of mind.
What is Alzheimer’s?
Alzheimer’s is a neurodegenerative disease that primarily affects memory. However, its impact extends further: it can also progressively impair other vital abilities such as language, orientation, reasoning, and the independence needed to perform the simplest daily activities.
It is currently the most common cause of dementia. As the disease gradually progresses, those affected often struggle to recall recent information, follow the thread of a conversation, find the right words, or manage their usual routines.
For this very reason, when untreated hearing loss is added to this process, communication becomes even more difficult for both the patient and their family.
If the brain is already exerting extra effort to process information due to the disease, the additional strain of deciphering unclear sounds causes immense cognitive fatigue. This can accelerate the patient’s isolation—something that must be avoided.
What is the relationship between Alzheimer’s and hearing loss?
The relationship between Alzheimer’s disease, dementia, and hearing loss is an area of study that the scientific community has been analyzing in depth for years.
Research findings are clear: people with untreated hearing loss face a significantly higher risk of developing cognitive decline over time compared to those with normal hearing.
To clarify: a risk factor is not the same as a cause. Hearing loss is a factor associated with increased risk, not a direct cause. This means that having hearing problems is not a guarantee that you will develop Alzheimer’s in the future. It is simply a warning sign that we can—and should—manage proactively.
Currently, science is considering various mechanisms to explain the link between these two conditions:
- Brain strain: When hearing is impaired, the brain must divert extra resources and energy just to decipher unclear sounds, thereby reducing the capacity available for other functions, such as memory.
- Social isolation: Hearing loss leads us to disengage from conversations, and a brain that lacks social interaction and external stimulation weakens more rapidly.
The effort involved in listening
When a person begins to lose their hearing, communicating ceases to be natural and becomes a monumental task. Especially in challenging environments—such as a crowded restaurant, a family meal, or a busy street—the brain must constantly exert extra effort just to identify words and decipher the message.
To put it simply: imagine hearing a sentence where half the letters are missing. Your brain is forced to use context and mentally “fill in the blanks” to try to guess what the other person said.
When this stressful situation repeats itself throughout the day, listening becomes a deeply exhausting process. By the end of the day, the person is not only physically tired but also suffers from severe mental fatigue due to this excessive strain.
A brain that expends all its energy simply trying to decipher sounds has fewer resources available for vital functions such as memory, attention, and reasoning.
Less communication and more isolation
Hearing loss is not merely a physical issue affecting the ears; it is a condition that directly impacts our social and emotional lives.
When a person begins to struggle with hearing, their behavior within family and social circles changes. Gradually, they may start avoiding Sunday family meals, neighborhood gatherings, or everyday conversations in settings where multiple people speak at once, such as a café.
The most complex aspect of this situation is that the patient does not always make this choice consciously. In most cases, the person simply becomes exhausted. They stop participating in conversations and prefer to stay in the background because trying to follow the thread of a discussion has become an extremely difficult, uncomfortable, and frustrating task.
Over time, this withdrawal fosters social isolation. A lack of interaction with one’s surroundings is, in fact, one of the most significant and scientifically proven risk factors regarding cognitive health. A brain that does not socialize, debate, laugh with others, or receive emotional and conversational stimulation is a brain that shuts down and weakens much more rapidly.
Hearing loss can make a person appear more confused.
There is a very specific situation in my daily practice that I consider crucial to explain in detail to families. I often see children in my clinic who are concerned because they notice their elderly parents seem more distracted, uninterested, or even confused during everyday conversations.
Faced with these signs, the initial reaction is often fear: people almost automatically assume these are early signs of aging or the onset of irreversible cognitive decline, such as Alzheimer’s. However, clinical reality shows us that, in many cases, the person simply did not hear what was said to them correctly.
Imagine being asked a question but catching only three isolated words. If you answer based on the little you managed to pick up, your response will likely seem incoherent or out of place. This is not due to a reasoning or memory issue; it is the direct result of a flawed audio signal reaching the brain. It is not a failure of mental processing, but a problem with sound input.
It is essential to clarify that a hearing check is by no means a substitute for a specialized neurological or medical assessment. If there is a serious suspicion of dementia, a medical specialist must make the diagnosis. Nevertheless, ruling out a hearing problem is the logical first step—and the easiest one to resolve. A modern, well-fitted hearing aid eliminates that “auditory fog,” restoring clarity to messages and allowing the person to respond once again with their usual agility and coherence.
Can hearing aids prevent Alzheimer’s?
This is one of the questions that generates the most interest, and we must answer it precisely. We cannot claim that hearing aids prevent Alzheimer’s disease or serve as a treatment for it.
However, there is solid scientific evidence that timely treatment of hearing loss offers enormous benefits for daily communication. Furthermore, for certain individuals, it directly contributes to slowing the rate of cognitive decline.
A study published in The American Journal of Geriatric Psychiatry suggests that hearing devices, such as hearing aids, could help prevent cognitive decline in older adults with hearing loss by facilitating greater social connection.
On the other hand, one of the most significant studies in this field is the ACHIEVE trial, funded in part by the National Institute on Aging. Among the participants as a whole, no significant difference in the rate of cognitive decline was observed between those who received hearing aids and those who participated in a health education program.
However, among individuals at higher risk of cognitive decline, the group that received hearing aids experienced a reduction of nearly 50% in the rate of decline over the three-year follow-up period.
This is an interesting result, but it does not mean that hearing aids are a treatment for Alzheimer’s disease.
Research is ongoing, and we still need to better understand the extent to which treating hearing loss can influence the long-term risk of cognitive decline.
What benefits can hearing aids provide?
Using hearing aids can be an effective tool not only for improving hearing but also for reducing the risk of dementia or slowing its progression. Below, I outline the three key areas where a proper hearing aid fitting makes a real difference:
- Improving family communication: When a person regains access to the sounds they were missing, participating in conversations again becomes natural. This is invaluable within the home. Being able to follow the thread of a conversation during Sunday lunch, understand grandchildren’s voices, or hear a partner without constantly asking for things to be repeated relieves tension and brings joy back into the household.
- Encouraging social participation: Better hearing is the key to enjoying activities one might have started avoiding due to fear or embarrassment. It is not just about hearing louder sounds; it is about communicating, socializing, and resuming routines with total ease—whether it’s visiting a local café, attending a neighborhood meeting, or going for a walk with friends.
- Reducing the effort required to follow a conversation: A precise hearing aid fitting reduces the mental effort the brain needs to decipher what it is hearing. This is crucial in challenging environments, such as a bustling restaurant, a family gathering, or any place with background noise. By reducing this fatigue, the patient ends the day with significantly more energy and mental alertness.
Hearing aids play a vital role in preventing social isolation by allowing people to stay connected with others. By improving communication abilities, hearing aids help prevent those with hearing loss from feeling isolated, thereby fostering an active and healthy social life.
What if the person already has Alzheimer’s?
When a person is already living with an Alzheimer’s diagnosis and also has untreated hearing loss, maintaining their ear health remains an absolute priority.
In fact, communication becomes even more complex in these clinical scenarios. The combination of both conditions creates a double barrier: the disease hinders the processing of ideas, while hearing loss muddies the sounds coming from the outside world. When these factors combine, the patient can become disengaged from their surroundings much more quickly.
As a hearing care professional, the approach I take with these families is based on prudence and personalization:
- Assessing feasibility: We then analyze together whether a hearing solution (such as a hearing aid) could offer real benefits for their daily routine or if, conversely, it might cause them stress.
- Careful evaluation: The first step is to conduct a tailored test to confirm the presence of actual hearing loss and understand its exact characteristics in detail.
It is important to have realistic expectations here.
Not everyone with Alzheimer’s adapts to hearing aids in the same way; it depends entirely on the stage of the disease.
While many patients benefit greatly, practical day-to-day difficulties often arise. They may forget how to put them in, resist having them handled near their ears, struggle to clean them, forget when to wear them, or be unable to signal if the battery has died or the device is malfunctioning.
For this reason, the role of the family or caregiver is the deciding factor in success. The hearing aid ceases to be an aid solely for the patient and becomes a shared tool. Caregivers take on the routine tasks of checking, cleaning, and inserting the devices.
The effort is well worth it: enabling your loved one to hear you more clearly—even if only in short sentences—alleviates frustration, reduces agitation, and helps you maintain that precious emotional connection for as long as possible.
Some recommendations to facilitate communication
If we live or regularly interact with someone who has Alzheimer’s and also suffers from hearing loss, daily life can become frustrating if we do not know how to manage conversations; however, we can greatly facilitate communication by making small changes to our daily routines:
- Get their attention before speaking: A gentle touch on the arm or calmly saying their name prevents them from being startled and primes their brain to listen.
- Always position yourself facing them: Maintaining eye contact and ensuring they can clearly see your face aids in lip-reading and provides a sense of security.
- Speak clearly and naturally: There is no need to shout or exaggerate your words. Raising your voice too much can distort the sound from the hearing aid and cause agitation.
- Reduce background noise: Turning off the television or radio when trying to communicate eliminates distractions and competing sounds that drain their attention span.
- Check the hearing aids: Ensure the hearing aids are properly fitted, free of earwax, and that the battery is functioning optimally.
- Allow sufficient time to respond: Their brain processes information differently. Be patient and avoid stringing questions together; give them the necessary seconds to process and reply.
- Use gestures or visual aids: Accompanying your words with gentle hand movements or friendly facial expressions reinforces the message directly.
It is important to understand that these guidelines will not reverse the difficulties inherent to the disease. There will be better days when communication flows easily, and more challenging days when disorientation takes hold.
When is it advisable to have your hearing checked?
I do not recommend waiting until someone has practically lost their hearing before investigating what is going on.
Age-related hearing loss (technically known as presbycusis) does not happen overnight. It usually develops very slowly and progressively. At first, it does not even manifest as a simple “lack of volume,” but rather through small, everyday situations that we often overlook:
- “I can hear, but I don’t understand clearly when there is background noise”: A typical sign in challenging environments like restaurants or busy streets.
- “I constantly need people to repeat things”: This forces those around the person to make an extra effort to communicate.
- “I keep turning the TV volume up higher and higher”: A classic scenario that often sparks the first arguments or causes annoyance at home.
- “I struggle to follow conversations during family meals”: The person begins to lose the thread when several people speak at once.
- “It seems like everyone is speaking very quietly or mumbling”: Others are blamed for not articulating clearly, rather than the person considering their own hearing.
At the hearing center, we frequently find that family members notice the problem long before the individual does. Because the process is so gradual, the affected person becomes accustomed to poor hearing and accepts the situation as normal, while their children or partner bear the direct consequences of the resulting communication breakdown.
Preventive hearing check-up
A preventive hearing check-up is a quick, painless, and completely safe test. It entails no obligation, yet it provides an accurate picture of your hearing health. It is important to understand that while a test cannot halt the natural aging of the ear, it allows us to objectively assess whether there is hearing loss requiring periodic monitoring—or if it is the ideal time to start using hearing aids before the brain loses the ability to process sounds.
Inner ear health begins to change naturally around the age of 50. That is why this is the ideal age to undergo an initial preventive check-up and establish a monitoring schedule.
However, once we pass the age of 60 or 65, these tests should be performed more frequently. Just as we check our vision, blood sugar levels, or blood pressure, we should include an annual hearing test in our health routine. Detecting hearing loss in its early stages makes adapting to hearing aids much faster, curbs social isolation, and directly protects mental acuity. Taking care of your hearing in time means preserving your independence.
What can we do about hearing loss?
If you start noticing that conversations are no longer as clear, or if your family has commented on the volume of the television, it is natural to wonder what steps to take next. As a hearing care professional, I can assure you that the fundamental first step is to understand exactly how you are hearing.
Not all cases of hearing loss are the same; therefore, they do not all require the same solution.
- Early or mild cases: Sometimes, a simple annual check-up to ensure your hearing remains stable may be all that is needed.
- Cases involving comprehension difficulties: In other situations—where hearing loss is already interfering with your daily life—it is advisable to explore a personalized hearing solution.
When hearing aids are recommended for your specific case, their selection and programming are not left to chance. A proper fitting must be based on three pillars: the exact nature of your hearing loss, your specific needs, and—most importantly—the real-life situations where you struggle most to communicate (such as work meetings, family meals, or outdoor walks).
Adapting to hearing aids involves more than just putting them on the first day and forgetting about them. Your ears and brain need time to learn how to use this new technology and to readjust to sounds they had forgotten. That is why follow-up care is so important.
On World Alzheimer’s Day, it is crucial to remember that, although there is currently no cure for this disease, we do have effective strategies to manage its symptoms and significantly improve the quality of life for those affected. In this regard, treating hearing loss with hearing aids has become a key tool for slowing the rate of cognitive decline and keeping the mind active for longer.
As a hearing care professional in Valencia, I believe that caring for one’s hearing is not an isolated matter; it is part of overall health and quality of life, especially as we age.
Research into the link between hearing loss, cognitive decline, and dementia is advancing rapidly. Today, we have ample reason to prioritize our hearing health, yet we must also act responsibly and avoid alarmist messaging.
- Experiencing hearing loss does not automatically mean a person will develop Alzheimer’s.
- Using hearing aids does not mean we can prevent the disease or vaccinate someone against it.
What is within our control—and has a real impact—is detecting potential hearing loss early, providing personalized treatment when necessary, and enabling individuals to continue communicating, enjoying time with loved ones, and actively participating in their daily lives.
If you or a family member have started noticing early signs of hearing difficulty, don’t ignore it. We invite you to visit our hearing center in Valencia. At BienestarAudio, we conduct comprehensive hearing assessments and provide honest guidance on the various options available based on your specific needs.
If you or a loved one is experiencing hearing difficulties, we would be delighted to welcome you at C/ Juan Llorens 7. Our entire team is here to help you hear better and, in turn, live better. Book your appointment via WhatsApp at 621 00 16 93.
Taking care of your hearing isn’t just about hearing better. It’s about continuing to participate, communicate, and enjoy our day-to-day lives.
