A common risk of excessive protein intake is the potential for kidney damage, particularly in individuals with pre-existing kidney conditions. While protein is essential for muscle repair and growth, consuming it in excess can lead to an increased burden on the kidneys as they work to filter out the byproducts of protein metabolism. This can exacerbate kidney issues and lead to adverse health consequences. Moderation is key, and it's important to balance protein intake with other macronutrients while maintaining adequate hydration.