The kidney may not be as sophisticated as the brain or the liver, but it definitely has a lot of roles to play.
By using Tim’s case, we will see what would have happened to our earliest ancestors without any one of them.
Without any one of the necessary systems being in place, the whole would fail and calcium control would be lost.
Without Vitamin D, our earliest ancestors wouldn’t have been able to absorb enough calcium to build up their bones and survive within the laws of nature.
It’s important to understand how the body works, not just how it looks.