“What we're hoping to do eventually in the world of dementia is to predict risk. The distinction between a potential risk marker and a test that can definitively predict dementia is important. “The markers that we have today predict damage, whether amyloid markers, or tau protein markers, or other available tools. The study’s authors concluded that choroid plexus characteristics may serve as useful biomarkers of structural brain aging and dementia risk. Reference:Tianyu Yu et al, The choroid plexus, cognitive decline, and incident dementia: insights from the UK Biobank, Molecular Psychiatry (2026).