Vitamin D Supplementation
NaturalLimited
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WikiRemedy surfaces community experience, not medical advice. Always consult a qualified health professional.
Time to effect
4–8 weeks
Effort level
low
Category
Natural
Typical approach
Supplement / herb
How it works
Vitamin D receptors are expressed throughout the brain. Deficiency impairs serotonin synthesis and may contribute to winter mood changes through direct neurosteroid-like effects.
Evidence specifically for SAD is mixed — benefit most likely in those who are actually deficient. Routine winter supplementation (1000–2000 IU/day) is reasonable and low risk.
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WikiRemedy surfaces community experience, not medical advice. Always consult a qualified health professional.