there is 2 vitamin D : D3 (food) and D2 (sun)
it is posible to overdose with D3 , but you can't eat so much food , it is important if you use suplements of D3
I use sunblock cream in sumer only if we go on beach between 11 h- 17h, usually we go after 18h .. I have fat, so my body storage extra D2 in fat for winter
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