The authors guide us through a fascinating journey into understanding one of our body's most vital organs: the kidney. This book presents in an accessible way complex concepts that reveal how this organ performs its essential functions and its incredible complexity in the homeostasis of overall health. A prominent part of the book focuses on explaining the different renal replacement techniques, including peritoneal dialysis, hemodialysis and kidney transplantation. As well as the regulations that preside over it. In addition, it exposes the importance of the nutritional approach in chronic kidney disease, the main objectives to be achieved in people with this condition and provides practical advice on how to maintain a healthy diet while facing this metabolic condition.