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- How does vitamin D work?
One way vitamin D reduces the risk of depression is by reducing the risk of diseases for which depression is one of the side effects. Such diseases include cancer1, cardiovascular disease2 and multiple sclerosis3.
Increased inflammation from proinflammatory cytokines seems to be a risk factor for depression. Interleukin 6 (IL-6) and tumor necrosis factor-alpha (TNF-alpha) concentrations are elevated in depression456.
Vitamin D reduces inflammation from cytokines by shifting cytokine production from T-helper 1 (Th1) proinflammatory cytokines such as IL=6 to Th2 cytokines7 8. Vitamin D also reduces TNF-alpha concentrations9.
Page last edited: 06 May 2011
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- Paparrigopoulos, T. Ferentinos, P. Kouzoupis, A. Koutsis, G. Papadimitriou, G. N. The neuropsychiatry of multiple sclerosis: focus on disorders of mood, affect and behaviour. International review of psychiatry. 2010; 22 (1): 14-21.
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- Dowlati, Y. Herrmann, N. Swardfager, W. Liu, H. Sham, L. Reim, E. K. Lanctot, K. L. A meta-analysis of cytokines in major depression. Biological psychiatry. 2010 Mar 1; 67 (5): 446-57.
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- Smolders, J. Thewissen, M. Peelen, E. Menheere, P. Tervaert, J. W. Damoiseaux, J. Hupperts, R. Vitamin D status is positively correlated with regulatory T cell function in patients with multiple sclerosis. PLoS One. 2009; 4 (8): e6635.
- Guillot, X. Semerano, L. Saidenberg-Kermanac’h, N. Falgarone, G. Boissier, M. C. Vitamin D and inflammation. Joint, bone, spine : revue du rhumatisme. 2010 Dec; 77 (6): 552-7.
- Zittermann, A. Frisch, S. Berthold, H. K. Gotting, C. Kuhn, J. Kleesiek, K. Stehle, P. Koertke, H. Koerfer, R. Vitamin D supplementation enhances the beneficial effects of weight loss on cardiovascular disease risk markers. Am J Clin Nutr. 2009 May; 89 (5): 1321-7.
- Humble, M. B. Vitamin D, light and mental health. J Photochem Photobiol B. 2010 Nov 3; 101 (2): 142-9.
- Humble, M. B. Gustafsson, S. Bejerot, S. Low serum levels of 25-hydroxyvitamin D (25-OHD) among psychiatric out-patients in Sweden: relations with season, age, ethnic origin and psychiatric diagnosis. J Steroid Biochem Mol Biol. 2010 Jul; 121 (1-2): 467-70.