Is vitamin D associated with lower levels of Alzheimer's biomarkers?

MedicalXpress | avr. 01, 2026

Having higher levels of vitamin D in the blood in middle age is associated with lower levels of tau protein in the brain, which is a sign of dementia, years later, according to a study published in Neurology Open Access. The study does not prove that vitamin D levels lower the level of tau and the risk of dementia; it only shows an association.