A new study in Neurology adds to the mounting evidence linking vitamin
D deficiency with increased risk for dementia and Alzheimer disease.
In this study, participants with deficient levels (25-50 nmol/L) had
significantly increased risks for dementia and AD, than participants
with sufficient baseline vitamin D levels (50 nmol/L or higher).
The researchers conclude, “Our results confirm that vitamin D
deficiency is associated with a substantially increased risk of all-
cause dementia and Alzheimer disease. This adds to the ongoing debate
about the role of vitamin D in nonskeletal conditions.”