Excessive protein intake, particularly from supplements, can lead to several risks, including potential kidney damage in susceptible individuals. High protein consumption increases the burden on the kidneys as they work to eliminate excess nitrogen from protein metabolism. It may also lead to imbalances in nutrient intake, resulting in deficiencies of other vital nutrients. Additionally, excessive protein can contribute to dehydration and gastrointestinal issues, such as bloating and diarrhea. Moderation is key to ensure a balanced diet and avoid these health risks.