ofonorow wrote:(I am still wondering about their reported puny vitamin A recommendation !?! Maybe that was a misprint in another post. How why would the world's strongest proponent of vitamin A recommend 1/10 of the RDA? Can anyone find the reference?)
Are you saying weston price is recommending 1/10th of the rda?
From what I have seen WP is recommending 9500 IU vitamin A and 1950 IU vitamin D (
http://www.westonaprice.org/cod-liver-o ... cs#clarify)
the RDA for Vit A is 625mcg RAE (
http://www.iom.edu/Activities/Nutrition ... %201-4.pdf)
When dealing with REA things get a little muddy depending on type of vit A being consumed.
1 IU retinol = 0.3 mcg RAE
1 IU beta-carotene from dietary supplements = 0.15 mcg RAE
1 IU beta-carotene from food = 0.05 mcg RAE
1 IU alpha-carotene or beta-cryptoxanthin = 0.025 mcg RAE
If we make the assumption the fermented cod liver oil WP recommends falls into the "beta-carotene from dietary supplements" category and they recommend 9000IU we could multiply 9000*.15 and and it would be 1350mcg RAE which is double what the FDA recommends. If its in the form of retinol then we have 9000*.3 which is 4x rda.