@DavidPS
I've suspected for a long time that poor kidney function does not really require absurdly low levels of protein intake.
I think a lot of the medical myth has a lot to do with the perception that a higher protein intake increases creatinine levels, and because the eGFR formula used by rote and without question following the pied piper training of lemmingian doctor NPCs and transmitted to an uncritical base of miseducated people leads to the wrong think that eating less protein correlates to lower creatinine levels and a formulaic increase in the eGFR. An increase in calculated eGFR is assumed to indicate better kidney health.
But the e in eGFR means the eGFR is just an estimate, no better than a guess or a rule of thumb, and eGFR can be way off the mark when compared to actual GFR. And creatinine levels do not necessarily have a negative correlation to glomerular filtration rates (GFR).
This myth is a disservice to our health as it leads us to unnecessarily low levels of protein intake, which would severely rob us of key nutrients needed for our health upkeep.
Another association with protein intake has to do with protein being acidic, and because of this fact, protein avoidance or minimization is needed to keep the body ecf (extracellular fluid) from being acidic.
While it is true that we rely on our kidneys to maintain pH balance, and to keep us from being chronically acidic and to keep our organs from degenerating by calcification and fibrosis, it isn't by the fearful reduction of meat and protein intake that we keep ourselves from becoming chronically acidic and diseased, it starts with us knowing how to maintain a healthy lifestyle centered a lot on having the nutrients that keep our organs from degenerating and aging.
The kidneys that stay young and working well benefit greatly from keeping our ecf pH optimal such as calcification and fibrosis are avoided. Lessening protein intake may be needed when kidneys are already advanced in their degeneration, but with healthy kidneys that benefit from good acid balance protein restriction is not something to be of concern as healthy kidneys and a sound mitochondrial sugar-dominant metabolism provides us with a surplus of a pH buffer in the form of CO2 to keep us in a continual state of acid base balance.