I appreciated the information. I have not had any problems with my kidney over these years, until recently, and that was temporary. I've never used tobacco, alcohol or even routine drugs, preferring a more natural approach to handling health problems. I have done well, although back discomfort has curtailed many activities. I do well with activities requiring sitting or walking, but bending, stooping, and lifting.
Quick movements are very unpleasant, and a long time in any one position becomes painful.
I also must have a pillow for back support whenever I sit. Considering the alternatives, these are easy enough to live with. I've come to understand that my life can go on uneventfully for a while, as long as I work within my limitations. Then something little will set things off and I'm in trouble. I'm grateful that things resolve after a while, and that I'm fairly healthy in between.