I ski regularly and never use sunblock and haven't noticed much sunblock used by others here in Europe. Perhaps skiers generally only  use it  at Easter on sunny days, I only ski in winter.

 

As far as palaeos are concerned, they must have had regular access to vitamin D, not just those near the coast, given the vitamin D-content of organ-meats(which palaeos routinely ate). The Arctic-inhabiting Inuit definitely had plenty of vitamin D in their diets, for example, not just the ones next to the sea.



If I were eating a highly refined, non-palaeodiet, had darker skin and hardly went outside, I think there might well be cause for concern, but otherwise not. The thing is ingesting too much of any 1 mineral or vitamin, outside the ones in natural foods, can often lead to nutritional imbalances over time as real health is more a case of interaction between many different substances. I'll give an example. For years doctors have claimed that calcium-rich dairy is essential for strong bones, yet studies have shown that those on low-calcium diets such as the Bantu, have great bone-structure, while dairy-drinking nations such as Finland etc. have high rates of soteoporosis. Unsurprising, really, as Cordain et al have shown that ingesting too much calcium in the diet can lead to the blocking of the uptake of other minerals essential for building bones such as magnesium.

 

Geoff


 
 		 	   		  
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