
Dementia Linked to Peripheral Health Issues, Not Just Brain Decline
A global review of more than 200 studies finds up to one-third of dementia cases are linked to diseases outside the brain, with gum disease, chronic liver disease, hearing loss, vision loss, and type 2 diabetes showing the strongest associations. While causality isn’t proven, researchers say preventing peripheral diseases could help mitigate dementia risk and may explain why brain-focused treatments have often failed, highlighting a complex brain–body network and new directions for prevention and research.













