There are lots of treatment options for seasonal affective disorder, which is linked to less sunlight in winter ...
The Independent on MSN
How to know if you’re vitamin D deficient and what to do about it
How to know if you’re actually vitamin D deficient and what to do about it - Experts say that if you only take one supplement ...
Low levels have been linked to mood disorders such ... especially if you’re not supplementing it during the winter months in ...
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