Drexel University study links voice disorders to dementia risk

Researchers at Drexel University’s College of Medicine have identified a significant link between voice disorders and an increased risk of dementia and cognitive decline. The study, published in the Journal of Voice, analyzed medical records from over 833,000 patients to examine the relationship between vocal abnormalities and neurological health.

The findings indicate that individuals with a diagnosed voice disorder, but no hearing loss, face a 58% higher risk of developing cognitive impairment compared to those with neither condition. For those experiencing both voice disorders and hearing loss, the risk of developing dementia more than doubles. This suggests that changes in vocal quality, clarity, volume, or pitch may serve as an early indicator of neurological changes, independent of auditory function.

Vocal abnormalities can include reduced volume, changes in tone, decreased clarity, or a limited vocal range. While these symptoms are not definitive proof of dementia, experts suggest they may reflect early changes in the neural networks—including the frontal and temporal lobes, basal ganglia, and cerebellum—that coordinate speech production.