Earlier quoted context omitted.
>When in reality, the human GI evolved to support an extremely broad range of inputs as it's most significant factor. While we can agree that innovation should not be stifled, the idea that we can determine the processes by which the body utilizes nutrients and their interdependent effects, after a few months of research, is utterly hubristic. I often make the claim that the human body (other animals are close too) e…
>What exactly is 'Vitamin D'? Cholecalciferol (D3) [1] is quite different from Ergocalciferol (D2)[2] Not as far as nutrition is concerned. Some studies have indicated that D2 is slightly less potent, but the majority have shown equal efficacy. >Or take "Vitamin K" for example Same deal. You are confusing the notion that there are multiple chemical compounds that fulfill the role of a vitamin, that you need them all.…
The evidence does not support that claim. If anything we don't know, and that's my point. [1][2]
>Your whole argument seems to be an attempt at pointless pedantry, when the pedantry presented doesn't even matter to the subject at hand.
No I'm saying similar to "Vitamin B". You body may be lacking in pyridoxine or cobalamin or one of the other B vitamins. They are not equivalent. The B group has been studied in far greater depth, compared to say the menaquiniones (K2 group), and there simply does not exist the same level of research. Similarly K and D are groups too, and treating them like it's a single chemical with a specific effect is just plain wrong.
If you want to continue to argue please backup your claims with studies indicating K2 (any form) is equivalent to K1.
A study of 11000+ men by a German cancer research center found this:
"Our results suggest an inverse association between the intake of menaquinones, but not that of phylloquinone, and prostate cancer. Further studies of dietary vitamin K and prostate cancer are warranted." [3]
In other words K2 intake was correlated with reduced levels of prostate cancer, and K1 was not.
They are NOT the same thing and it's arrogant to dismiss this them as being functionally equivalent or assume one's body will perfectly convert between various forms as needed.
[1] http://ajcn.nutrition.org/content/84/4/694.full
[2] http://www.ncbi.nlm.nih.gov/pubmed/21289249
[3] Dietary intake of vitamin K and risk of prostate cancer in the Heidelberg cohort of the European Prospective Investigation into Cancer and Nutrition http://www.ncbi.nlm.nih.gov/pubmed/18400723