Hearing loss

Hearing loss is often seen as an innocent side effect of aging. Having a bit more trouble understanding in a busy restaurant, turning up the TV volume, asking people to repeat themselves more often. However, research shows that hearing loss is much more than a practical inconvenience. It turns out to be a significant risk factor for cognitive decline and dementia.

That’s why hearing loss has been added to LIBRA2 as a separate domain for brain health.

What do we mean by hearing loss?

Hearing loss means that you perceive or process sounds and speech less effectively. This can manifest in:

• difficulty following conversations, especially in groups
• becoming fatigued from listening
• hearing sounds, but not clearly understanding words
• comments from others that the TV or radio is loud

Hearing loss is usually determined by a hearing test (audiogram), but symptoms often begin before the loss is formally measured.

Why is hearing loss important for your brain?

More mental effort when listening If hearing is difficult, your brain has to work harder to understand conversations. This means there is less mental capacity left for remembering, planning, and understanding. Researchers call this “listening effort.”

Less social interaction Many people with hearing loss gradually withdraw from conversations and social situations. This often happens unconsciously. Fewer social stimuli mean less cognitive stimulation, which is detrimental to brain health.

Changes in brain areas Research with brain scans shows that long-term hearing loss is associated with changes in brain areas involved in language and sound processing. This can affect broader cognitive networks.

Hearing loss as an early signal Sometimes, hearing loss is not only a cause but also a marker of broader aging processes in the nervous system and blood vessels. It may thus be an early warning signal.

Common Misunderstandings

“It’s just a part of getting older” Common does not mean harmless. Even mild hearing loss can put extra stress on the brain.

“I still hear enough, so it’s not that bad” Many people can still hear sounds well, but have more difficulty understanding speech. That actually costs extra mental energy.

“A hearing aid is only needed when it really gets bad” Research suggests that early intervention helps to better maintain social engagement and cognitive load.

“Hearing aids make you look old” In reality, untreated hearing loss often leads to more withdrawal, insecurity, and fatigue than any aid ever would.

What can you do yourself?

Get your hearing tested if in doubt If you notice that conversations are becoming tiring or that you need to ask more often what someone is saying, have a hearing test done. This can be done through your doctor or a hearing specialist.

Protect your hearing Avoid prolonged exposure to loud noise. Use earplugs at concerts, festivals, or when using loud equipment. Noise damage is often permanent.

Consider aids in good time Hearing aids are now small and technologically advanced. They are designed to make listening less strenuous, not just to make it louder.

Adjust your environment Choose quiet places for conversations, sit closer to your conversation partners, and don’t be afraid to indicate what helps you understand someone well.

Stay socially active Even if listening is difficult, keep seeking contact. Social interaction remains an important protective factor for brain health.

When extra attention is needed

If hearing problems are accompanied by memory complaints, fatigue, or withdrawal behavior, it’s advisable to discuss this with your doctor. Early detection provides more opportunities for support.

In short

Hearing loss is not a minor inconvenience, but a significant factor for brain health. By making listening less strenuous and maintaining social engagement, you may be able to slow cognitive decline. Taking hearing seriously is a tangible investment in your brain, both now and in the future.