Sweets are rightfully associated with a variety of modern diseases because of their high energy content and the fact that the energy comes from the most easily digested and absorbed simple sugars. However, for patients with renal insufficiency, the disadvantages of sweets are also advantages, and the appropriate addition of simple sugars for extra meals can help to supplement the energy deficit of a protein-restricted diet. Sweets can also stimulate insulin secretion, and insulin can promote a-keto acid binding urea nitrogen, so sweets are not a dietary contraindication for patients with chronic kidney disease, but should be used to the fullest to enrich the patient’s diet, only to include it in the full-day diet plan and replace the share of carbohydrates. In patients with chronic kidney disease, in order to get the maximum use of the protein consumed and not let it be converted into energy and consumed, it is necessary to take a low protein diet along with energy supplementation. At least 35 kcal per kilogram of body weight per day, mainly supplied by sugar, can be eaten with fruits, sucrose products, chocolate, jams, honey, etc.