Hearing Loss

Age-related hearing loss is very common, especially after age 60. Studies have consistently found that people with untreated hearing loss have a higher risk of developing cognitive decline and dementia compared with people who hear well. Researchers do not believe that hearing loss directly causes dementia. Instead, hearing loss is modifiable risk factors that can influence brain health over time.

Several mechanisms may explain the connection:

1. Increased cognitive load: When hearing is impaired, the brain must work harder to understand speech, leaving fewer resources available for memory and thinking.

2. Reduced social engagement: Hearing difficulties can lead people to pull back from conversations and activities, increasing loneliness and social isolation, which are associated with cognitive decline.

3. Changes in brain stimulation: Reduced auditory input may contribute to changes in brain structure and function over time.

Audiology care can play an important role in maintaining communication, quality of life, and potentially cognitive health. Key interventions include:

• Early hearing evaluation: Identifying hearing loss before it significantly affects daily life.

• Hearing aids and assistive listening devices: Improving access to speech and environmental sounds.

• Communication strategies: Training patients and families in techniques that reduce listening effort.

• Follow-Up: Regular follow-up to ensure hearing devices are working effectively and needs are met.

What Does the Evidence Say About Hearing Aids?

Recent research suggests that treating hearing loss may help slow cognitive decline in some people, particularly those at higher risk for dementia. Large clinical studies have shown that hearing intervention can reduce the rate of cognitive decline in certain older adults. However, hearing aids are not a cure for dementia and do not guarantee prevention or delay of cognitive decline. Nevertheless, maintaining good hearing and communication is an important part of healthy aging, and treating hearing loss is a practical step that may help support long-term brain health.

Published in the Memory Center newsletter July 2026.