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Vitamin D and Sleep Quality

Vitamin D levels are directly related to sleep quantity and quality. Therefore, boosting vitamin D levels through sun exposure, diet and supplements may have benefical effects on sleep. In fact, several high quality studies suggest that vitamin D has positive effects on age-related sleeping difficulties as well as sleeping disorders:
1. Vitamin D deficiency is strongly linked with poor sleep quality and various sleeping disorders. [780-795]
2. A large body of preclinical studies found that vitamin D receptors are present in specific areas of the brain that are involved in sleep regulation. [796-800]
3. In patients with sleeping problems, higher levels of supplemental vitamin D are associated with significant improvement in sleep quality. [801]
4. In 20-50 year-old people with sleep disorders, vitamin D supplementation improves sleep quality, reduces sleep latency, raises sleep duration and improves subjective sleep quality. [802]
5. In veterans with multiple areas of chronic pain, standardized vitamin D supplementation improves sleep and quality of life by reducing pain levels. [803]
6. In symptomatic menopausal women with sleep alterations, vitamin D supplementation (1 tablet per day for 24 weeks) improves sleep by reducing menopausal symptoms. [804]

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