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There has been a ton of adverse publicity regarding vitamin A over the years, and it is based on very weak (if any) evidence. Why? Well, a major property of vitamin A is to promote cell differentiation (pigs minus vitamin A in their feed were born dead, or with all sorts of birth defects. - Roger J. Williams Nutrition Against Disease. Put the vitamin A in feed - same mother pigs - normal pigs were born.)
Cancer cells are rapidly dividing undifferentiated cells. Like cells in a growing fetus. Once they began "differentiating into muscle, bone, etc, they lose their ability to rapidly divide. This makes vitamin A a potent weapon against highly aggressive cancers, and yes, you can find a few studies that substantiate this - works better than chemo for many soft cancers. This poses an economic threat to the only class of chemo drugs that actually work, thus in my opinion, placing a Big Pharma target on the back of Vitamin A.
Weston Price is currently the beacon for vitamin A, whether they know about the anti cancer properties or not.
Everyone else seems to have been influenced by the negative publicity. And miss the important role of vitamin A, such as fighting infection and for promoting bone reconstruction. Vitamins A, D, K (and Levy has found good evidence for vitamin C) are all involved in bone maintenance. If one of these vitamins is missing, the bones won't be strong. Vitamin As role seems to be to clear out old tissue, so K and D (and C) can build new bone.. The ability of vitamin A to remove some matter from bone cells has been twisted into "vitamin A causes bone fractures" (And it probably does, if only vitamin A, but not C, K and D are taken).
Can't resist - it is true the liver stores vitamin A.
This fact is used to scare people that it is not like "good" water soluble vitamins that are expelled.
Do you know why vitamin A is stored in the liver?
Reason: it is so important and vital that we cannot live long without it! (Blindness/infection - see children in 3rd world) So we have evolved to solve the problem of temporary deficiency - say during the winter months - by storing it in the liver. It can slowly be released into the blood stream during the times we aren't getting vitamin A in the diet. Pretty amazing how this has been turned around by Big Pharma propaganda.
I learned much from the authoritative book by Sommers: Vitamin A Deficiency.
It has also been discovered (and largely hidden) that if you aren't getting vitamin A - you cannot metabolize protein. Again, kids in the 3rd world (India this time) - gave them protein - nothing happened until WHO swept in to provide the 500,000 vitamin A shots - then the kids began utilizing protein.
Note 100000 to 500000 iu injections of vitamin A SAVES LIVES IN THE 3RD WORLD.
Another thing about fat soluble antioxidants - they can protect lipid parts of the cell that cannot be reached by vitamin C and glutathione.
skyorbit wrote:How much Vitamin K2 does Levy recommend?
TRacy
skyorbit wrote:3-9 milligrams? Damn. Most supplements are on the microgram scale. That goes along with Weston Price (he called it Activator X) though.
Tracy
So he's OK with MK-4 vs MK-7?
3-9mg sounds like a mistake or a typo. I've seen figures of around 200mcg quoted for activation, e.g.
http://articles.mercola.com/sites/artic ... in-k2.aspx
Other useful info there on D/K2 as well.
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