The Role Of Nutrition In Our Health Practice Test

In CKD, managing potassium and phosphorus is crucial because the kidneys’ ability to excrete these minerals declines as kidney function worsens. As GFR drops, potassium can accumulate in the blood, raising the risk of dangerous heart rhythms, while phosphorus can build up and contribute to bone and vascular problems. To prevent these issues, dietary restrictions for potassium and phosphorus are adjusted based on the stage of CKD and the person’s lab values; earlier stages may require milder limits, and more severe restrictions are used as kidney function declines or when lab abnormalities appear. This stage-dependent approach helps keep electrolyte levels in a safer range and supports overall health. Other nutrition aspects matter too: energy intake needs to be adequate to prevent malnutrition, and protein intake is generally moderated rather than unlimited to reduce waste build-up while preserving lean body mass. But no dietary restrictions at all would miss the key risk signals CKD presents.