High-Dose Vitamin D Linked to 13% Cognitive Boost in At-Risk Seniors
In a small Emory University–led study of 54 older adults with sleep problems and mild cognitive impairment, daily vitamin D intake of 5,000 IU or more was linked to more than a 13% rise in MoCA cognitive scores versus no vitamin D, suggesting high-dose vitamin D could be a modifiable factor to support brain health during early cognitive decline; results were similar for vitamin D2 and D3, but the research is preliminary and focused on an early-risk window.
