Thanks a lot for this interesting read, especially the point about relying on fat-oxidation in the long run.
I wonder though why some UFC fighters or Joe Rogan for example are having mostly exclusively carnivore diets... do they eventually run into issues with high cortisol?

I personally have no issues, it's a family member who was given a test by the doc and told to do something about it (the doctor actually didn't wanna prescribe anything). So having read this thread I am not concered about high cholesterol, but will tell the family member to also eat foods that lower cholesterol (for example oatmeal for breaky).