Voice and speech patterns linked to dementia risk

New research indicates that changes in speech patterns and voice disorders may serve as early indicators of dementia and cognitive impairment.

A study published in Science Advances involving nearly 3,000 Spanish speakers from Argentina, Chile, Colombia, Mexico, and Peru utilized a “speech clock” algorithm. This model analyzes acoustic and linguistic features—including speed, pauses, tone, vocabulary, and semantic precision—to estimate chronological age. A significant discrepancy between a person’s actual age and their “speech age” has been linked to accelerated biological aging, epigenetic changes, and poorer cognitive performance.

Complementary research from Drexel University College of Medicine, published in the Journal of Voice, examined over 800,000 participants. The findings suggest that voice disorders, such as laryngitis or vocal cord paralysis, are associated with an increased risk of developing dementia. Specifically, participants with a voice disorder but no hearing loss showed a 58% increased likelihood of cognitive issues, while those experiencing both voice disorders and hearing loss faced a 104% increased risk.