Alkaline Diets and Kidney Disease : Many dangerous fad diets exist that purport to treat diseases such as cancer by manipulating the pH of blood with different foods. While there is no good evidence that acidic foods alter the body’s pH and promote disease, the hypothesis that “dietary acid load” relates to disease should not be completely dismissed. The kidney serves to regulate blood pH, but if kidney function declines and other tissues catabolize to maintain pH, then it is very plausible that manipulating the diet to reduce the acid load could spare tissues and improve outcomes in chronic kidney disease (CKD).