To mark World Hearing Day (Tuesday, 3 March), Campus Health Services shares some insights on the impact of exposure to high volume on hearing.

Workplaces can be louder than they seem. Repeated exposure to noise above 85 decibels or prolonged use of headphones at high volumes can, over time, lead to permanent hearing loss.

Research shows a strong link between hearing loss and an increased risk of developing dementia. The risk appears to rise as hearing loss becomes more severe. While hearing loss does not directly cause dementia, it may contribute in several ways:

• Increased cognitive load: The brain has to work harder to process sounds, which can strain cognitive resources over time.
• Social and mental impact: Hearing loss can lead to social withdrawal, loneliness, and reduced mental stimulation - factors recognized as increasing the risk of cognitive decline.
• Possible shared brain changes: Some researchers suggest there may be underlying changes in the brain or blood vessels that affect both hearing and cognition.

The good news is that hearing loss is largely preventable. Some practical steps include:

• Protect your ears: Use earplugs or earmuffs in noisy environments.
• Follow the 60/60 headphone rule: Keep the volume under 60% and listen for no more than 60 minutes at a time before taking a break.
• Early assessment and hearing aids: Regular check-ups and using hearing aids when recommended can help maintain hearing health.
• Stay socially and mentally active: Engagement with others and stimulating activities support overall brain health as we age.

Could you be experiencing hearing loss?

• Do you often ask people to repeat themselves?
• Do you need the TV, radio, or music louder than others prefer?
• Do you struggle to follow conversations in noisy environments?

If you are concerned about your hearing, contact Campus Health Service to schedule an appointment:

• Stellenbosch Campus: 021 808 3494
• Tygerberg Campus: 021 938 9590