Rhonda Patrick· PhD
Because you can be in non-nutritional ketosis but consuming a lot of supplemental beta-hydroxybutyrate and be like, "Oh, I'm killing it. I'm at two millimolars concentration." Whereas I'm also taking my glucometer readings precisely because I don't want to be running at 120 glucose and dismiss that. If I wake up and I'm fasting 120 glucose each morning, something funny is going on that I need to pay attention to.