Midlife Vitamin D Linked to Lower Tau Buildup in Brain
TL;DR
A study of 793 adults found higher vitamin D levels in midlife (around age 39) were associated with fewer tau protein tangles in brain scans about 16 years later; there was no link with amyloid-beta. The results show association, not causation, and researchers say clinical trials are needed to determine if vitamin D supplementation could help reduce dementia risk.
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