Re: Kidney transplant
While every surgery has risks, the transplant centers check you 6 ways from Sunday for every possible thing. If your brother passes all the testing, he is healthy! My cousin gave me a kidney 10 years ago and she is doing fantastic. The risks are minimal. Think of it this way, if your brother was trapped in a burning building, would you run in to rescue him? Of course. And he would do the same for you. Except donating a kidney is much, much safer.
To give you an idea, I had a roommate in the hospital a while back and she was getting a kidney transplant. She had donated to her husband 10 years before and did lose her remaining kidney for unknown reasons. How many folks has my transplant center had this happen to? She was number 12 out of 5000 donors.
Don't forget, many folks are born with only one kidney and live their entire lives completely normally. There is some recovery period, but after that is over, he will be fine.
Feel free to ask me questions about the process. I read my cousins donor package and can tell you a lot.
Just as an aside, I was given the "3 to 5 year" thing too and it took over 20 years for my diabetes to torpedo my kidneys. It may be a very long time before you need any intervention.
Dxd T1 1966, 2001 dialysis, 2002 kidney transplant, 2003 insulin pump, 2008 pancreas transplant