Ketones particularly in the brain, ketones are a carbon source for glutamate (anaplerosis) and thus help to balance glutamate/glutamine homeostasis through stabilization of energy metabolism in astrocyte following recovery from a hypoxic/ischemic event. The fact that the brain can derive two-thirds of its energy from ketone bodies, synthesized mostly from fat, allows humans to survive total starvation for 60–90 days.
Keto Brain Benefits | How a Ketogenic Diet Boosts Clear Thinking and Peak Mental Performance

Kidisle 1200w blender cedar smoothie enjoying some cedar from the backyard
Kidisle 1200W blender cedar smoothie