Memory, Dementia and Hearing Loss


I am seeing new brain-training products on the market attempting to keep our brains sharp. May I suggest “better hearing”. There is mounting evidence that links memory, dementia, and hearing loss—especially untreated hearing loss.

Research indicates that when people with untreated hearing loss strain to hear, they have more difficulty remembering what they heard. Researchers believe this has to do with what is called “cognitive load”. In order to compensate, people with untreated hearing loss draw on mental resources that they would have normally used to remember what was just said.

Hearing loss and dementia
A study from Johns Hopkins Hospital found that older adults with untreated hearing loss are significantly more likely to develop dementia than those with normal hearing. Hearing loss is associated with accelerated cognitive decline in older adults. Some experts believe that hearing aids use may potentially help.

Those with moderate to severe hearing loss are up to 5 times more likely to develop dementia.

Major health studies have found that older adults with hearing loss, particularly males, are more likely to develop Alzheimer’s disease and dementia, compared to those with normal hearing. Males with hearing loss are 69 percent more likely to develop dementia compared to those with normal hearing.

The risk of dementia escalates as a person’s hearing loss worsens. Those with mild hearing impairment are nearly twice as likely to develop dementia compared to those with normal hearing. The risk increases 3 times for those with moderate hearing loss, and 5 times for those with severe impairment.

Every 10-decibel increase in hearing loss increases the risk for dementia by 20%. For those above the age of 60, 36% of their dementia risk is associated with hearing loss.

Hearing loss and Alzheimer’s – what’s the connection?

Studies suggest that hearing loss causes brain changes that raise the risk of dementia. 

Brain shrinkage – When the “hearing” portion of the brain grows inactive, it results in tissue loss and changes in brain structure, creating the first link between hearing loss and Alzheimer’s disease. 

Studies show that the brains of people with hearing loss shrink or “atrophy” more quickly than the brains of people with normal hearing.

Brain overload – An “overwhelmed” brain creates the second link between hearing loss and dementia. When it’s difficult to hear, the brain must work overtime just to understand what people are saying. Straining to hear all day, every day, depletes a person’s mental energy and steals brain function needed for other crucial functions like remembering, thinking, and acting. This can further set the stage for Alzheimer’s, dementia and other cognitive disorders. 

Hearing loss and social isolation

The third link between hearing loss and Alzheimer’s is social isolation. A study by The National Council on the Aging (NCOA) of 2,300 hearing impaired adults found that people with untreated hearing loss are more likely to experience loneliness, worry, depression, anxiety, and paranoia—and are less likely to join organized and casual social activities. When a person withdraws from life, their risk for dementia intensifies. 

In short, the less we stimulate our brains by interacting with other people, places, and things—and the less we use our brains to hear and listen—the more quickly our brains decline, putting us at greater risk for dementia.

Hearing aids can help prevent dementia.

Numerous studies show that hearing aids not only improve a person’s hearing—they also help preserve a person’s independence, mental abilities, emotional and physical health, and work, home, and social lives. A full, happy life keeps your brain active.

Early identification and treatment of a potential hearing loss helps minimize risks later in life.

Hearing aids can help those who have Alzheimer’s.

If a loved one is showing signs of dementia, help them get their hearing checked sooner than later. Sometimes, un-diagnosed hearing loss symptoms are thought to be Alzheimer’s symptoms when they’re really not.

For those with Alzheimer’s, hearing loss can aggravate symptoms. A hearing impairment makes it difficult to listen, reply, and respond to verbal cues. It escalates feelings of confusion, isolation, and paranoia.

Hearing aids can help relieve Alzheimer’s symptoms, and several styles are easy for a person with cognitive impairment to use. An American Journal of Epidemiology study found that hearing aids slowed the rate of memory decline and improved the quality of life for Alzheimer’s patients with hearing loss.

For more information on better hearing or hearing aids, visit or call 1-800-416-2434, 9:00 a.m. to 9:00 p.m. EST (6:00 a.m. to 6 p.m. PST).

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