Finally, I want to add that the most common surprise of those that start following a LCHF diet is, as you said, «I have noticed improved mental sharpness.» (yourorthomd.com)
It is much more difficult to recognize the far more frequent head injuries in which there is no loss of consciousness but rather only temporary loss of mental sharpness. (momsteam.com)
The diets promote alertness and mental sharpness in dogs age seven years and older. (petbusiness.com)