Patients with chronic nephritis can eat sugar. Overall for patients with chronic nephritis, the diet requires low salt, low fat, high quality low protein, and also high calorie intake. In order to avoid an increase in urinary protein and excessive production of nitrogenous metabolic waste products, patients with chronic nephritis need to control their overall protein intake, which is only about 80% of that of a normal healthy person. In order to minimize protein breakdown and to supply the body with the calories it needs, patients with chronic nephritis, advocate supplementing with enough carbohydrates for energy, while sugar is a water compound that can be eaten if the patient with chronic nephritis does not have diabetes.