Which dietary guidance should CKD patients follow regarding phosphate?

• A. Increase phosphate foods
• B. Take phosphate supplements
• C. Limit potassium foods
• D. Avoid phosphate additives

Answer: (D)

In CKD, the kidneys struggle to excrete phosphate, so keeping phosphate under control is essential to prevent bone problems and cardiovascular issues. The most effective dietary guidance is to avoid phosphate additives. These inorganic phosphates are highly absorbable and are added to many processed foods and drinks, often labeled as phosphates or ingredients containing “phosphate.” Because they boost the phosphate load without adding much to the natural sense of fullness or nutrition, they contribute disproportionately to serum phosphate. By steering clear of these additives, patients can reduce phosphate intake more effectively than by worrying only about natural phosphorus sources.

Increasing phosphate-containing foods would worsen the problem, and taking phosphate supplements would raise phosphate further, while limiting potassium targets a different nutrient.