I'm not aware rut man. As the old myth goes you lose protein in the egg from actually cooking it. I've never once heard of missing proteins from drinking a non pasteurized egg white. Studies?I'm not sure if you're aware, but make sure they're pasteurized. If you get it straight from the egg, there's an enzyme within the white that keeps the body from absorbing most of the nutrients. When pasteurized, the heat kills the enzyme and the body will take in all of the protein.

