4 doctors weighed in:

How much do you shorten your life if you donate one of your kidneys?

4 doctors weighed in
Dr. Keith Klein
Internal Medicine - Nephrology & Dialysis
3 doctors agree

In brief: Donate!

Not one single day! it is very safe and experience in people who are born with one kidney, soldiers who lost a kidney from gunshot wounds in wwi and wwii and experience with donors since the 1960's show the life expectancy is unequivocally normal.
But what does change is a big change in your ethical and moral standing. You have given the "gift of life".

In brief: Donate!

Not one single day! it is very safe and experience in people who are born with one kidney, soldiers who lost a kidney from gunshot wounds in wwi and wwii and experience with donors since the 1960's show the life expectancy is unequivocally normal.
But what does change is a big change in your ethical and moral standing. You have given the "gift of life".
Dr. Keith Klein
Dr. Keith Klein
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1 comment
Dr. Saptarshi Bandyopadhyay
This assumes, of course, that the donor is otherwise healthy and has no medical / surgical problems that would preclude surgery. But you are right... it was the actuaries who actually first theorized that the kidney regenerates (compensatory hypertrophy of the remaining kidney) because they compiled mortality tables & found that donors left with 1 kidney were no different than other humans with 2.
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