Most doctors aren't helpful and just say it cant be reversed ... hogwash .. what you put in your body matters. If you feed it processed crap and crap that is harder to break down then water and a say a natural food like a carrot, apples, etc your no doubt stressing out your system more then you need to especially if you have kidney disease.
Overall I didnt listen to the various stupid doctors I met with rather joined a facebook group called Natural Kidney Journey. My kidney function is healthier then ever as i was at stage 3a kidney disease now my kidney function is 80 percent and climbing after 7 months of revolutionizing my diet.
If you were to join that Facebook group too you would see many similar stories like mine daily. Further the creator of the group along with others in the group are now dialysis free .. see Don Davis's story https://www.forksoverknives.com/from-3-percent-kidney-functi...
Changing your diet may work for others too while some it may not. You never know til you try and eating better is an overall good thing for the body.