http://www.1stholistic.com/Nutrition/hol_nutr_does-excess-protein-turn-to-fat.htm What happens to the protein: It is broken down into building blocks known as peptides. Then, it is further broken down and it becomes amino acids. The amino acids are absorbed through the small intestine's lining and enter the blood stream. From here, some of the amino acids build the body's protein stores. Excess amino acids are converted to fats and sugars and follow the paths described above. This is such a...