Guest guest Posted January 10, 2009 Report Share Posted January 10, 2009 Hi Everyone-- I've been following Masterjohn's research for several years now, and read his latest WAPF paper with great interest ( " Does Vitamin A Cause Osteoporosis? " ) In that paper, he writes: " Just as the higher quality studies demonstrate a relationship between vitamin A and osteoporosis, the higher quality studies among those that report both vitamin A status and vitamin D status demonstrate that whether vitamin A is harmful or healthful depends on whether sufficient vitamin D is consumed with it. " My question is: What is the optimal preformed vitamin A/vitamin D intake ratio? Now, being a scientist myself, I know that there might not be enough data out there to definitively answer this question. However, Chris has so much research at his fingertips, that I thought he might give a reasonable " best guess " range--- along with a " danger " range. I mean, it seems that 100/1 A/D is too high a ratio--- but what is best? 10/1? Is 1/1 too low? For example, if you took 4000 IU of D a day, would 4000 IU of A be too little? Additionally I was wondering if anyone knew or could estimate this ratio for traditional cultures, especially those of the Arctic circle who must get their D from food and not sunlight. -Az Quote Link to comment Share on other sites More sharing options...
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