Can treating hearing loss help stave off cognitive decline?
We all want to maintain our mental sharpness as we get older. Dementia, Alzheimer’s and
cognitive decline are conditions everyone hopes to avoid.
A growing body of research has shown that hearing loss plays a role in our ability to stay
mentally sharp as we age. In fact, in a 2018 review of the research, it was concluded that
untreated hearing loss increased the risk of dementia by 50 percent.
While researchers admit the science is still inconclusive on exactly why untreated hearing loss
increases dementia risk, they do offer three probable reasons.
1. Hearing loss leads to social isolation
Untreated hearing loss has long been linked to increased social isolation and loneliness, which
studies have shown increases the risk of Alzheimer’s and dementia.
Think about it — if you struggle to hear, you’ll be more likely to withdraw from social activities
or situations where hearing plays a big role.
2. Hearing loss shifts your cognitive load
As hearing becomes more difficult, your brain has to work harder to register and comprehend
what you’re listening to. This steals energy needed for memory and thinking. Scientists refer to
this as the “cognitive load theory.”
Imagine your brain as having a finite amount of fuel. As hearing loss increases, you use more
“fuel” to comprehend and makes sense of what you’re listening to, meaning you have less fuel
for tasks like memory and decision-making.
3. Hearing loss accelerates brain shrinkage
Finally, hearing loss is shown to accelerate brain atrophy or shrinkage.
Yes, believe it or not, our brains shrink as we age. But researchers at John’s Hopkins found that
people with impaired hearing lost more brain tissue per year than peers with normal hearing —
likely due to atrophy from lack of stimulation.
So, can treating hearing loss help keep us mentally sharp?
No evidence has yet proven that hearing loss treatment can prevent cognitive decline
— though Johns Hopkins University is currently undergoing a controlled trial — but two studies
strongly suggest it may help.
One, in 2015, studied subjects over a 25 year period and found that those with self-reported
hearing loss who did not wear hearing aids showed evidence of accelerated cognitive decline,
while those with hearing loss who did wear hearing aids had no more cognitive decline than
their normal-hearing peers.
A 2017 study was even more interesting. The study, conducted by The Lancet Commission on
Dementia Prevention and Care, concluded that managing or treating hearing loss in mid-life is
one of nine things you can do to help prevent dementia. And — more importantly — was the
number one risk factor they recommended you could modify to “reduce the incidence of
dementia or substantially delay its onset.”
In fact, researchers suggest that treating hearing loss treatment could prevent up to 9 percent
of 47 million dementia cases in the world.
Wearing hearing aids is the most effective treatment for hearing loss
This link between hearing loss and cognitive decline — and the studies above — should give
everyone added incentive to treat hearing loss and not ignore common hear loss signs.
Our Livio AI hearing aids were specifically designed to help people both manage their hearing
loss and achieve good cognitive health. In addition to being our best sounding and best
performing hearing aids, they’re the first wearable device that helps you monitor your brain
and body activity.
Time Magazine liked Livio so much, they named it one of 2019’s Best Inventions.
If you’re ready to treat your hearing loss and take proactive charge of your cognitive health, we
can help. Click here and we’ll help you schedule a safe and health
department-compliant hearing testing and consultation with a hearing healthcare professional near you.
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