Vitamin D & Cognition (2006)
This study examined vitamin D & cognition. Vitamin D status, cognitive performance, mood, and physical performance in older adults was assessed. 58% of the participants were found to have abnormally low vitamin D levels. Vitamin D deficiency was associated with presence of a mood disorder and with worse performance on 2 measures of mood and cognitive performance.
C H Wilkins et al., ‘Vitamin D deficiency is associated with low mood and worse cognitive performance in older adults’, J Geriatr Psychiatry, 14(12):1032-40, 2006