http://www.powerhealth.net/protein2001.htm "The facts are that high-protein diets, when consumed in balance with enough water, fat and fat-soluble vitamins, and nutritional factors from non-starchy vegetables, ARE healthy." ----- Original Message ----- From: "Balzer, Ben" <[log in to unmask]> The lean protein problem is related to the inability of the liver to convert excess nitrogen to urea- which I think is probably limited by intake of vitamins etc, but there ain't no data.