Can low vitamin D cause nervousness?

Question

I heard that low vitamin D can cause nervousness and anxiety...if this is so, then can vitamin D help?

Answer 1

There is a preliminary study showing that anxiety is associated with low vitamin D levels (Bičíková et al., 2015). However, this is only preliminary, and more studies are needed before a causal relationship is established. Furthermore, there are no studies showing that vitamin D is helpful for anxiety.

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Reference:

Vitamin D in anxiety and affective disorders. Bičíková M, Dušková M, Vítků J, Kalvachová B, Řípová D, Mohr P, Stárka L. Physiol Res. 2015;64 Suppl 2:S101-3.