Can you run down the *inefficiently* part? Are you talking about the side affects? The cortisol? I felt great in ketosis after the first week or so. I dropped it because of the cortisol. Oliva ----- Original Message ----- From: "Todd Moody" <[log in to unmask]> Your brain and red blood cells absolutely need glucose. Without it they will die, and you will die. But you don't have to eat glucose for them to get it, because they can convert amino acids (inefficiently) to glucose as needed.