In recent years, several large international studies have taken a closer look at why some people develop dementia while others do not.
In this context, the Lancet Commission on Dementia has reviewed existing research and identified a number of risk factors that can be influenced through prevention.
Here, hearing loss in midlife is highlighted as the most important single modifiable factor.
According to Alzheimer’s Research UK, targeted efforts to address untreated hearing loss could significantly reduce the number of dementia cases.
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This is striking, as hearing is rarely mentioned when discussing brain health, where the focus more often lies on exercise, diet, and social relationships.
What happens in the brain
When hearing deteriorates, it requires more concentration to follow conversations.
Especially in environments with background noise, the brain has to work harder to understand words and context.
This additional strain means that fewer resources are available for other functions, such as memory and attention.
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Over time, this can make everyday life more demanding and lead people to avoid social situations.
Research suggests that this combination of mental strain and reduced social contact may increase the risk of cognitive decline.
A doctor’s assessment
British doctor Amir Khan has, according to the Mirror, discussed the research in the podcast No Appointment Necessary.
He explains that hearing loss in midlife has been linked to up to a fourfold increase in the risk of developing dementia.
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At the same time, he emphasizes that several lifestyle factors interact, and that regular checks of both vision and hearing should be prioritized alongside exercise and sleep.
Sources: Pensionist.dk, The Lancet Commission on Dementia, Alzheimer’s Research UK, Alzheimer’s Research UK, and Mirror.
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