They put you through some seriously rigorous testing to make sure everything works okay. So if you pass the tests there are minimal worries. Kidneys are pretty interesting. The only way having two kidneys is more beneficial is if you're in an accident, and the one gets hit. Which is why if Shawn Springs gave one, he would have to quit playing (obviously). But any diseases will attack two kidneys the same as they'd attack one. So say you have kidney disease, it doesn't matter if you have one, two or four kidneys, they're all going to shut down the same as they would if there were only one. Another interesting thing, if you lose a kidney when you're very young, the other will actually increase in size to compensate. Also, they put the new kidney in the cup of your hip bone. They hook it into the femural artery. My aunt has PKD and they just left her old kidneys in. It has zero effect on me, I play in a no-check ice hockey league, eat whatever I want, drink too much, etc. And they assure me that all the other donors over the years have no ill effects.
Kudos to you, SummersEve. I'm guessing your aunt feels fresh all the time now. From everything I've ever read or heard about Walls, he's a quality human being who looks out for others. This makes it quite clear. Also, to all you Cowboys fans: the rest of the world doesn't consider that touchdown "infamous."
Not that this should take away from Walls' friendship with Springs, but the decision is yet to be made.
i think that is a good calling from God. I hope that people that think of them self as being superior where they can't help on another. I coment for doing a good deed in life.