High Protein Diets: The Liver's Burden

This source explains that unlike other nutrients, amino acids contain nitrogen, which poses a unique challenge during metabolic breakdown. Because the body cannot store surplus amino acids as it does with fats or sugars, it must either use them for protein synthesis or dismantle them for energy. When these molecules are broken down, the nitrogen is converted into ammonia, a toxic byproduct that requires the urea cycle for safe elimination. The remaining carbon skeletons are repurposed for energy production or transformed into vital molecules like neurotransmitters and nucleotides. Ultimately, the text highlights the specialized pathways the body uses to manage these essential compounds while preventing toxic buildup.