One of my old friends wound up in critical care yesterday with 5 percent kidney function after being put on a new blood pressure medication. Something similar happened to my aunt some years ago--that was actually when low carb stuck for me, my blood pressure had been creeping up, that's pretty much universal on my Dad's side of the family. My aunt's kidneys are fine now, my friend seems to be doing okay, hopefully he'll have as good a result. Sort of hammers home the problem with unnecessary treatment.