Thanks for the reply and link. I remember reading that a while back. I may have done a poor job wording my post. It is my understanding that we use ketones all the time, even when eating a high carb diet, and regardless if they show up in the blood/breath or urine. I guess what I was trying to say is that is hard for me to accept these people as "experts" when they don't seem to understand this basic concept. I know Dr. Westman understands this, but it seemed that he worded his answer to avoid embarrassing the questioner.