The latest WHO guidelines state that hearing aids may be offered to adults with hearing loss to help reduce the risk of cognitive decline and dementia. While the recommendation is conditional because more research is needed, it reflects growing evidence that addressing hearing loss supports long-term brain health.
Why hearing matters
Hearing loss affects around one in five people worldwide and becomes more common with age. Untreated hearing loss has been linked to an increased risk of cognitive decline, with research suggesting it may contribute through:
- Reduced social engagement and isolation
- Increased effort required to listen and understand speech
- Changes in brain function associated with reduced auditory stimulation
The WHO estimates that addressing hearing loss could help reduce the global burden of dementia.
What the evidence shows
Current research suggests that adults with hearing loss who use hearing aids may have a lower risk of developing dementia or mild cognitive impairment than those who do not. Hearing aids have also been shown to provide small improvements in cognitive function.
The WHO notes that more high-quality research is still needed, particularly on the long-term effects of hearing interventions and the role of cochlear implants.
“The WHO’s latest guidance reinforces something we’ve long known at Hear and Say: brain health begins with hearing health, and the foundation for both is built across the lifespan. Hearing is not just an issue of ageing, it influences how we learn, connect, communicate and participate from childhood through to older adulthood,” said Emma Rushbrooke, Chief Clinical Officer.
More than protecting brain health
The WHO emphasises that hearing aids should be used to treat hearing loss—not solely to prevent dementia. Their benefits include improved communication, greater social participation, better mental wellbeing and an overall higher quality of life.
“As the evidence continues to grow linking untreated hearing loss with cognitive decline, this guidance reminds us that addressing hearing loss is about far more than improving hearing. It is an investment in lifelong brain health, independence and quality of life. By making hearing care accessible early and throughout life, we can help people maintain the communication, relationships and cognitive resilience that support healthy ageing, ” Emma said.
The updated guidelines reinforce an important message: identifying and treating hearing loss is an important part of healthy ageing and may help support cognitive health throughout life.
For the full report go to https://www.who.int/publications/i/item/9789240123557