If blood urea levels are high, it may be beneficial to limit protein intake, as urea is a byproduct of protein metabolism. Foods high in protein, such as red meat, poultry, fish, dairy products, and legumes, can contribute to increased urea production. However, it is important to consult with a healthcare professional or a registered dietitian before making significant dietary changes, as individual nutritional needs vary. They can provide personalized recommendations and guidance based on the specific circumstances, considering factors such as overall health, kidney function, and other medical conditions.