Research has consistently shown a strong connection between hearing loss and dementia, particularly in older adults. Individuals with untreated hearing loss are at a significantly higher risk of cognitive decline and conditions such as Alzheimer’s disease. While hearing loss does not directly cause dementia, it may contribute to social isolation, increased mental load, and reduced brain stimulation — all of which can accelerate cognitive deterioration.

Please note, hearing loss isn’t a guarantee of developing dementia. It is important to maintain the health of one’s hearing to sustain overall quality of life, which may help alleviate dementia from hearing loss.

There is growing evidence highlighting the link between hearing loss and dementia, especially among older adults in Australia. In fact, around 74% of Australians over the age of 70 experience some degree of hearing loss*, making it the country’s second most common chronic condition.

Studies show that untreated hearing loss is one of the most significant modifiable risk factors for dementia, with the potential to help prevent up to 9% of new dementia cases when addressed in midlife**. Despite this, many older Australians delay hearing care—potentially increasing their long-term cognitive risk. 

Globally, data indicates that mild hearing loss doubles the risk of developing dementia, while severe hearing loss increases the risk by up to five times*. A major study published in JAMA Otolaryngology, which analysed over 573,000 individuals, also found that people with hearing loss had a 7% higher risk of dementia—especially when they were not using hearing aids**.

As Dementia Action Week 2025 approaches this September, it’s more important than ever to raise awareness about the connection between dementia and hearing loss. Early hearing tests, timely intervention, and the use of modern hearing aids could play a crucial role in reducing dementia risk across Australia.

The hearing loss and dementia risk becomes more prominent with age, but it can be mitigated with the right support. Hearing loss increases cognitive strain and limits brain engagement, which can lead to faster decline. Hearing care professionals recommend regular hearing tests for those over 60 as part of routine health check-ups.

Since hearing loss can have a significant impact on your mental health and cognitive function, it’s essential to have regular hearing checks and act promptly if you notice any changes in your hearing ability. Early intervention not only supports better communication but may also help protect your brain.

There is growing scientific evidence that treating hearing loss could play a role in preserving the brain’s cognitive ability. In a landmark 2017 report published in The Lancet**, Professor Gill Livingston and her team at University College London reviewed 13 studies exploring the link between hearing loss and dementia.

They found that midlife hearing loss is not only a significant risk factor for dementia, but also a modifiable one. Their research suggested that managing hearing loss could help delay or even prevent some dementia cases—highlighting the importance of addressing hearing issues as part of a broader brain health strategy.

No matter which hearing solution you choose, modern hearing aids can help you access the sounds essential to keeping your brain active and engaged. By combining hearing devices with simple communication strategies – like facing the person you're speaking with and reducing background noise – you can continue to enjoy meaningful conversations and the cognitive stimulation that social interaction provides.

Here are some helpful tips to support your brain and hearing health:

• Use hearing aids: Hearing devices help you access the auditory input your brain needs to stay active and healthy.
• Adopt good communication strategies: Face the person you're speaking with and minimise background noise to make conversations easier and more engaging.
• Stay socially connected: Social interaction offers important mental stimulation and helps protect against cognitive decline.
• Maintain an active lifestyle: Regular physical activity supports overall health and brain function.
• Follow a balanced diet: Nutritious eating habits contribute to both physical and cognitive wellbeing.
• Challenge your brain: Take part in activities that keep your mind sharp, such as puzzles, reading, or learning something new.
• Prioritise mental and emotional wellbeing: Keep a regular routine of social engagement to support long-term brain health and reduce dementia risk.