Keywords: Carbohydrate; Diabetes; Diabetic nephropathy; Dietary counseling; Dietary fiber; Elderly; Energy expenditure; Energy intake; Excessive consumption; Frailty; Low-protein diet; Medical nutrition therapy; Mild low-carbohydrate diet; Personalized dietary counseling; Proportion of nutrient intake; Protein; Protein Intake; Registered dietitian; Safety; Sarcopenia; Source of protein; Target body weight.