Hearing Loss & Dementia

at Allergy & ENT Associates of Middle TN

Research by Johns Hopkins University and others has confirmed what many audiologists and physicians have long feared: there is a strong link between hearing loss and cognitive decline. Early symptoms such as memory loss and difficulty concentrating can worsen over time. Left untreated, hearing loss may contribute to dementia and other forms of severe cognitive impairment.



At Allergy & ENT Associates, we encourage early detection and treatment of hearing loss to support long-term hearing health and overall well-being.

How Hearing Loss Can Affect Cognitive Health

Hearing loss can impact more than communication. Over time, untreated hearing loss may contribute to:


  • Difficulty concentrating


  • Memory problems


  • Increased mental fatigue


  • Social withdrawal and isolation



  • Higher risk of cognitive decline


Because hearing loss often develops gradually, many individuals adjust without realizing their hearing is worsening.

Research on Hearing Loss and Dementia

In a major study published in 2013, researchers tracked 2,000 older adults (average age 77) over six years. Participants who began the study with the most severe hearing loss—significant enough to interfere with everyday conversation—were 24 percent more likely to experience cognitive decline than individuals with normal hearing.


A similar study published in 2011 found that individuals with moderate hearing loss were three times as likely to develop dementia. These findings strongly support the connection between untreated hearing loss and cognitive decline.

Correlation Between Hearing Loss & Dementia

Although the exact reason for the connection is not fully understood, several theories exist.


One possibility is that the brain must work harder to process sound when hearing is impaired. This increased cognitive load may reduce the mental resources normally available for memory and concentration.


Another theory suggests that hearing loss may contribute to a decrease in the brain’s gray matter, leading to shrinkage in brain cells and reduced ability to process sound.



Social isolation is another key factor. Many individuals with hearing loss withdraw from social interactions due to difficulty communicating. This lack of socialization has been shown to accelerate cognitive decline and dementia.

Hearing Aids and Early Treatment

Regardless of the cause, one conclusion is clear: hearing aids can help. Research indicates that patients who manage hearing loss with hearing devices may reduce the likelihood of cognitive decline or delay the onset of dementia.



Early detection is essential. If you are experiencing hearing loss, seek treatment as soon as possible. Even if you are unsure, scheduling a hearing evaluation can help identify changes early—before symptoms become more noticeable or begin to affect daily life.

Frequently Asked Questions

  • Does hearing loss cause dementia?

    Hearing loss does not directly “cause” dementia, but research shows a strong association between untreated hearing loss and increased risk of cognitive decline and dementia.

  • Can hearing aids reduce the risk of cognitive decline?

    Studies suggest that managing hearing loss with hearing aids or other hearing devices may reduce the odds of cognitive decline or delay the onset of dementia.

  • When should I schedule a hearing evaluation?

    If you notice difficulty hearing conversations, ringing in the ears, or changes in communication, you should schedule an evaluation. Even without obvious symptoms, routine hearing testing is recommended as hearing loss can develop gradually.

Call Allergy & ENT Associates at (615) 889-8802 for more information or to schedule an appointment.