Depression may be triggered by low vitamin D levels in the blood, according to a new study published in the Aug 19, 2009 issue of European Journal of Clinical Nutrition.
The study led by Nanri A and colleagues from International Medical center of Japan in Shinjuku-ku, Tokyo, Japan found that in November, people with their serum levels of vitamin D falling in the highest quartile were 49 percent less likely to feel depressed.
The study involved 527 municipal employees aged 21 to 67 who worked in two municipal offices in Japan. It was meant to examine the association between vitamin D deficiency and depression
In conclusion, genetic variations of DBP are associated with insulin resistance in Japanese with normal glucose tolerance, which might contribute to the development of type 2 diabetes.
Variations in vitamin D-binding protein (group-specific component protein) are associated with fasting plasma insulin levels in Japanese with normal glucose tolerance.
Hirai M, Suzuki S, Hinokio Y, Hirai A, Chiba M, Akai H, Suzuki C, Toyota T.
J Clin Endocrinol Metab. 2000 May;85(5):1951-3.
PMID: 10843180
Association between serum 25-hydroxyvitamin D and depressive symptoms in Japanese: analysis by survey season
A Nanri, T Mizoue, Y Matsushita, K Poudel-Tandukar, M Sato, M Ohta, N Mishima
European Journal of Clinical Nutrition (19 August 2009) doi:10.1038/ejcn.2009.96 Short Communication