What fluid loss occurs with protein metabolism?

When protein is metabolized in the body, a significant amount of water is required for the deamination process, where amino acids are broken down. It is estimated that the body requires about 700 mL of fluid for the metabolism of every 100 grams of protein. This water loss primarily occurs due to the need to eliminate nitrogenous waste products, such as urea, which are produced when amino acids are deaminated. These waste products are excreted in urine, necessitating additional water for their dilution and elimination from the body, thus affecting overall hydration status.

Understanding this fluid loss is essential for athletes and individuals engaging in high protein diets, as it highlights the need for adequate hydration to balance out the increased water loss that occurs with protein metabolism. Proper hydration can help improve performance and support recovery, making it a crucial aspect of sports nutrition.