Hearing Health and Brain Health: Why Getting Your Hearing Checked Matters

Hearing loss is now identified as the number one modifiable risk factor for dementia, accounting for roughly 7% of cases. Even more encouraging: trials suggest that treating hearing loss with hearing aids may significantly slow cognitive decline - by as much as 48% in high‑risk older adults. These findings mean hearing care is not only about better communication and quality of life; it’s an important element of brain health.

How hearing loss affects the brain

Hearing loss creates changes in how the brain processes sound. When the ear provides reduced or distorted input, the brain must work harder to understand speech and follow conversations. That sustained extra effort can lead to increased cognitive load and may divert resources from memory and thinking. Over time, social withdrawal and reduced mental stimulation tied to hearing loss can further accelerate cognitive decline. These mechanisms are part of why hearing loss has been linked to higher dementia risk.

What the evidence shows

Two high‑profile sources highlight the importance of hearing-care interventions:

• The Lancet Standing Commission’s 2024 report on dementia prevention identified hearing loss as the top modifiable risk factor, responsible for around 7% of dementia cases.
• The ACHIEVE trial (published in The Lancet, July 2023) found that in high‑risk older adults, treating hearing loss with hearing aids and auditory rehabilitation was associated with a slower rate of cognitive decline — by approximately 48% compared to those who did not receive intervention.

Together, these studies reinforce that early identification and management of hearing loss can play a meaningful role in reducing dementia risk and preserving cognitive function.

Signs it’s time for a hearing check

Many people assume hearing loss is an inevitable part of ageing, but it’s often gradual and goes unnoticed. Common signs include:

• Frequently asking people to repeat themselves
• Difficulty following conversations in noisy settings
• Turning up the TV louder than others prefer
• Avoiding social situations because conversation is tiring
• Struggling to hear on the phone

If you notice any of these signs in yourself or a loved one, book a hearing assessment — early action matters.

What an assessment and treatment involve

A comprehensive hearing assessment includes case history, ear inspection, and diagnostic tests to measure hearing thresholds and speech understanding. If hearing loss is identified, options typically include hearing aids, assistive listening devices, communication strategies, and auditory rehabilitation. Modern hearing aids are discreet, comfortable, and tailored to each person’s hearing profile and lifestyle needs.

Practical steps you can take now

• Book a professional hearing assessment for anyone showing signs of hearing difficulty. Early diagnosis opens treatment options that may protect brain health.
• Encourage loved ones, especially older adults, to consider testing even if they think their hearing is “fine.”
• Combine hearing care with social engagement, cognitive activities, exercise, and cardiovascular health strategies - dementia prevention is multifactorial.

Cape Town Hearing Centre Winter Special

This winter, Cape Town Hearing Centre is offering a Winter Special: book an assessment this month and receive an exclusive consultation discount plus a complimentary device fitting. It’s a great opportunity to check hearing, explore modern solutions like the discreet Virto™ R Infinio, and take a proactive step for both communication and cognitive health.

Book an assessment

If you or a loved one has untreated hearing loss, this is your sign to get it checked. Call us or book online to schedule an assessment and learn about treatment options that can improve hearing and support long‑term brain health.

* Sources

• Livingston G, et al. Lancet Standing Commission on Dementia Prevention, Intervention, and Care: 2024 report. The Lancet.
• Lin FR, Pike JR, Albert MS, et al. ACHIEVE trial. The Lancet, July 18, 2023.