Your remaining kidney grows about 50% in the year after donation. A donor ends up with ~70% of their pre-donation capacity, not half. https://pmc.ncbi.nlm.nih

Your remaining kidney grows about 50% in the year after donation. A donor ends up with ~70% of their pre-donation capacity, not half. https://pmc.ncbi.nlm.nih.gov/articles/PMC7737237/ https://pmc.ncbi.nlm.nih.gov/articles/PMC7737237/ Donating a kidney is a net positive in aggregate kidney function.