Vitamin D is extremely important for health in general and also for brain health. Individuals with low levels of vitamin D have been shown to have more depression and cognitive impairment than those with normal vitamin D levels. One study even showed that adequate vitamin D protects against getting cancer.
TO LEARN ABOUT VITAMIN D
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Garcion E, Wion-Barbot N, Montero-Menei CN, Berger F, Wion D. New clues about vitamin D functions in the nervous system. TRENDS in Endocrinology & Metabolism. 2002;13(3):2002.
Holick MF. The vitamin D epidemic and its health consequences. J Nutr. 2005;135(11):2739S-48S.
Lappe JM et al. Vitamin D and calcium supplementation reduces cancer risk: results of a randomized trial. Am J Clin Nutr. 2007;85(6):1586-91.
Wilkins CH et al. Vitamin D deficiency is associated with low mood and worse cognitive performance in older adults. Am J Geriatr Psychiatry.2006;14(12):1032-40