Individuals with chronic kidney disease would most likely need to monitor which nutrient closely?

Chronic kidney disease often leads to altered metabolism of various nutrients due to the kidneys' reduced ability to filter and excrete waste products. Among the nutrients listed, phosphorus is particularly crucial to monitor closely in individuals with this condition.

In healthy individuals, the kidneys regulate phosphorus levels by excreting excess amounts through urine. However, in chronic kidney disease, the kidneys' ability to filter out phosphorus diminishes, leading to increased phosphorus levels in the blood—a condition known as hyperphosphatemia. Elevated phosphorus can cause serious complications, including cardiovascular issues and the weakening of bones, as it leads to a disruption in calcium and phosphorus balance in the body.

Managing phosphorus intake through diet, medication (like phosphate binders), and regular monitoring of serum phosphorus levels are essential to prevent these complications and maintain overall health in individuals with chronic kidney disease. Therefore, phosphorus is the nutrient that must be observed most closely in these patients.