[azeirah]

Yeah that makes sense, but since the body is a complex system, it _would_ be possible that something like the following is going on. This is fictional, but _could_ be true, if we didn't know otherwise.

Your body prioritizes certain organs and bodily functions over others, depending on the resources that it gets. Who knows, perhaps when the body recognizes that it's not getting enough of a certain vitamin, it will change how it distributes the vitamin throughout the body. Now, because of evolutionary reasons, a function evolved that when the body recognizes the brain is getting too little of a certain vitamin, it takes a larger portion of what _is_ coming in, to make sure that the brain functions properly so it can solve the issue of poor diet, making a cut elsewhere in the body.

Of course, this is utter bullcrap, but it _could_ have been true.

Though, I'm completely with you, this is something I always assumed as well.