How does vitamin D affect mood?

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Some research suggests that vitamin D can play a role in maintaining positive moods, though it's not clear how. Several studies have found that people who have low blood levels of vitamin D are more likely to experience depression compared to people with higher vitamin D levels. These studies do not prove that vitamin D in your diet, or as a supplement, can help prevent depression, however. The research is still in its early stages. But vitamin D is important for health, including bone health, so it's a good idea to make sure you are getting enough.
Jill A. Grimes, MD
Family Medicine

Vitamin D appears to play a role in mood, so that if you are deficient in vitamin D, you may be more prone to depression.


A large study done in England showed a relationship between vitamin D levels and depressive symptoms in older residents. In people with severe vitamin D deficiency (levels less than 10 ng/ml), there was a 35% prevalence of depression, while in the whole sample, the prevalence was only 25%.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.