Clinical Nutritionist Practice Test 2026 - Free Practice Questions and Study Guide

Excess protein intake can lead to increased workload on the kidneys, which is particularly relevant for individuals who already have pre-existing kidney conditions. The kidneys are responsible for filtering waste products generated from protein metabolism. When protein intake is significantly elevated, the kidneys must work harder to excrete the nitrogenous waste products, such as urea.

This heightened demand can lead to increased glomerular filtration rate (GFR) as the kidneys try to excrete the excess waste, which, over time, may contribute to the progression of kidney disease or compromise kidney function. For healthy individuals, moderate protein intake is usually well-tolerated; however, when protein consumption exceeds the body's needs for growth, repair, and other metabolic processes, it can potentially lead to stress on renal function.

In contrast, options that suggest improvement in kidney function, prevention of kidney stones, or a complete lack of impact from protein on kidney health do not align with the established understanding of how excessive protein can stress the kidneys. It's essential to maintain a balanced diet, particularly when considering protein intake, to safeguard kidney health.