Kidney health experts have issued a warning to people who maintain high protein/low carbohydrate diets. These diets are popular among people who want to lose weight while maintaining lean muscle mass. The experts from the European Renal Association and the European Dialysis and Transplant Association suggest that these diets can also harm your kidneys. For diabetes patients and the obese the expert maintain that high protein/low carb diets also comes with a risk of severe loss of kidney function.