Originally Posted by
Carbonfiberboy
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Thus my doc recommended D2. I looked into it and saw that D3 is now recommended. I checked with him and he agreed with using D3 instead. We followed his dosage recommendations.
As discussed above the results, specific forms and optimal intake of vitamin D are inconclusive, not to mention the nutrient to nutrient interactions between vitamins which nonetheless apparently suggest that vitamin D should be taken with vitamin K --e.g., the sources you cited above talk about interactions that,
affect arterial calcification and hypervitaminosis.
Thus, maintenance of optimal serum levels between 75 to 100 nmol/L [11, 86] and ensuring adequate amounts of other essential nutrients including vitamin K are consumed, is key to health and performance.