Preventive neurologist warns that vision and hearing loss boost dementia risk

During a promotional dinner for the Brain Health Matters campaign, Dr. Kellyann Niotis, a preventive neurologist at Weill Cornell Medicine, warned that loss of vision or hearing is frequently overlooked as a driver of dementia. She noted that sensory deficits may reduce brain activation and discourage activities that keep the mind engaged, potentially leading to isolation and reduced exercise. A recent Lancet study estimated that up to 50% of dementia worldwide might be prevented by mitigating factors like sensory loss.

Niotis advised adults to stay current with eye and hearing screenings, pointing to warning signs such as halos, color perception changes, or complaints from acquaintances about hearing. She also suggested practical measures—wearing ear protection in noisy settings and sunglasses to block UV exposure—to safeguard sensory function. While screen time isn’t directly linked to permanent vision loss, she recommended regular breaks to avoid strain.