A zero-carb diet for a couple of weeks did not produce any ketosis as measured by a ketosis stick.
The most likely explanation is that you were eating a large amount of excess protein, most of which turns into glucose before it turns into ATP, and this was supplying (or nearly supplying) your nerve cells’ energy needs and inhibiting ketosis.
The most likely explanation is that you were eating a large amount of excess protein, most of which turns into glucose before it turns into ATP, and this was supplying (or nearly supplying) your nerve cells’ energy needs and inhibiting ketosis.