Carnivore may look like the natural stepping stone for those already on a ketogenic diet, but does it come at the cost of ketosis?
fitawakening.co.uk
This article is a good breakdown on what is happening with nutritional ketosis on carnivore vs ketogenic diet. Myself on the carnivore diet I have never measured ketones in my diet to the amount indicating nutritional ketosis, and I am measuring with an accurate blood test meter, not a urine strip.
The ancestral diet theory is a plausible theory with much supporting evidence but it breaks down here imo along this fat vs glycogen metric. Humans are not evolved to eat 90% fat and 10% protein. We are evolved to eat fatty protein diets and can also survive on 90% fat, or 90% carbs if we must, but the standard adaptation would be a high fatty protein diet. Something like 70/30 fat/protein.