Are you vitamin d deficient?
If you live north of the 37th parallel in the USA it is quite literally impossible for even the sunniest days to allow your body to produce vitamin D from November - April
While you can take vitamin d supplements there are some key differences:
Sun: UVB rays convert cholesterol in skin -> vit d3 -> kidneys -> activate vit D (natural regulation)
Pills: Supplement absorbed in gut with fats -> processed by liver -> kidneys -> activate vit D (no regulation)
Purchasing a vitamin d like the SPERTI that emits UVB rays has been a game changer in colder months
I can legitimately feel my body charging up instead of guessing if D3 pills are working











