Vitamin B12 deficiency causes insomnia and sleep disturbances
the verdict
SUPPORTED
the evidence backs this
confidence 81/100
Clinical research indicates an association between low vitamin B12 levels and an increased risk of insomnia symptoms and sleep disturbances, with case evidence showing sleep improvements upon correcting the deficiency.
Evidence for · 2
Association of Vitamin B12 Levels with Sleep Quality, Insomnia, and Sleepiness in Adult Primary Healthcare Users in Greece.
2023 · cited by 8
This cross-sectional study found that lower vitamin B12 levels were significantly associated with insomnia symptoms among adult primary healthcare users.
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More for · 1
Vitamin D deficiency promoting non-24 h sleep-wake disorder: a case report.
2023 · cited by 1
This case report observed that correcting a vitamin B12 deficiency (alongside other deficiencies) helped restore a normal sleep-wake rhythm in a patient experiencing insomnia and sleep-wake disorders.