SLIDE 16 10/23/2018 16
HEARING LOSS MAY BE LINKED TO ALZHEIMER’S
- In Healthy Aging, 2014, findings indicated
- lder adults who experience hearing loss may
be at increased risk of developing dementia, including Alzheimer’s disease.
- The risk of dementia likely increases as
hearing loss worsens.
- Hearing loss is one reason why people stay
away from social activities and leisure— leading to a sedentary lifestyle.
Researchers at Johns Hopkins have done studies looking at how hearing loss may influence cognitive
- decline. In each case, they met with a number of seniors over several years and tracked which ones
developed Alzheimer’s and how quickly the disease progressed. In each study, the people with hearing loss had higher rates of dementia.
- These studies don’t suggest that hearing loss itself causes dementia, but it does show
that there’s a link between the two. The researchers have a few theories on why that might be:
- Change in brain function: The particular part of your brain in charge of hearing and
processing auditory information may simply start to work differently when the hearing part of that equation goes away (or becomes strained), causing a change to how your brain is structured, which could be related to the effects of Alzheimer’s.
- Cognitive load: When you can’t hear well, you have to work a lot harder to make
sense of what people are saying. Every conversation you participate in requires more mental energy and work. If your everyday conversations are taking up most of the mental energy you have, then there’s less left for you to put toward memory or other cognitive functions. Researchers at Johns Hopkins have done studies looking at how hearing loss may influence cognitive
- decline. In each case, they met with a number of seniors over several years and tracked which ones
developed Alzheimer’s and how quickly the disease progressed. In each study, the people with hearing loss had higher rates of dementia.
- Social isolation: We know that social isolation can have some very serious effects on
both physical and mental health. When it’s hard to hear, it becomes harder to maintain social connections, which can lead to feeling alienated and experiencing all the negative effects of social isolation and loneliness.
- They share a cause: The researchers behind the study are confident they managed to
control this, but concede there is some possibility Alzheimer’s and hearing loss may both be caused by some third health issue that people who experienced both in the study shared.
- Though we don’t know if the relationship between Alzheimer’s and hearing loss is
due to one of these things or some combination of them, but simply knowing the relationship exists is a step toward being able to do something about it.