[Denver Ditdat]

And I know about polar bear livers. The fact that a polar bear has that much vitamin A in it's body at all should tell you something about the importance of vitamin A!

Feel free to do some research before you come back and argue.

I'll freely admit to my sketchy medical knowledge, and wouldn't be a bit surprised to be wrong.

My point was to be cautious of thinking that if a little vitamin C is good, a lot must be better. Vitamin A is important, too, as proved by the amount stored in polar bear livers. If we take that at face value and consume a huge amount of A, toxic results follow.

[djf]

Well, I apologize for being blunt. And I understand that just because a goat has so much, that doesn't mean we should run out and load up to the extreme.

Many of the processes in cellular biology are pretty much the same across mammalian species. That's why we can do alot of reliable testing on things like mice.

But some are different - never feed your dog grapes - he will die an agonizing death from kidney failure.

Of all the species measured, adjusted for body weight, they all generate AT LEAST 50 times the US RDA for vitamin C. That fact leads me to believe the US RDA is way too low, in fact, dangerously low.