Renal nutrition is a specialized field that focuses on dietary needs for individuals with kidney disease, as the kidneys play a vital role in filtering waste and maintaining fluid balance. A kidney-friendly diet often includes restrictions on sodium, potassium, and phosphorus, which can accumulate in patients with impaired kidney function. Protein intake may also be modified, depending on the stage of disease, to reduce kidney strain. Renal nutrition research explores the impact of various dietary interventions on slowing the progression of chronic kidney disease (CKD) and improving patient outcomes. New findings have highlighted the importance of individualized diets, as each patient’s condition requires specific adjustments to manage electrolyte balance, prevent malnutrition, and control symptoms like fluid retention and fatigue. Effective renal nutrition can enhance quality of life for CKD patients by reducing complications and slowing disease progression.