Which dietary modification is recommended for renal failure?

• A. Low Sodium, Potassium, Phosphorus, And Magnesium; High Carbohydrate
• B. High Protein And High Phosphorus
• C. Low Carbohydrate And High Fat
• D. High Sodium And Potassium

Answer: (A)

In renal failure, the diet aims to limit substances the kidneys can’t handle well while still meeting energy needs. The best approach is to reduce intake of minerals that accumulate and can disrupt balance: sodium to control fluid retention and blood pressure, potassium to lower the risk of dangerous heart rhythm problems, phosphorus to protect bone health and prevent mineral imbalances, and magnesium to avoid hypermagnesemia. At the same time, calories should come primarily from carbohydrates to prevent protein from being broken down for energy, which would increase nitrogenous waste that the kidneys must excrete.

So restricting sodium, potassium, phosphorus, and magnesium helps manage electrolyte and mineral balance, while increasing carbohydrates provides energy without adding extra protein load. The other patterns either add more protein or minerals that kidneys can’t clear effectively, or they replace carbohydrates with fats in a way that doesn’t address the electrolyte and waste concerns typical of renal failure.