Ketosis

My sister had a new theory to expound about over Christmas: ketosis, which has a bad reputation, is more truly a natural phenomenon where the body uses its stores of fat instead of ingested carbs to produce alternate and better brain food.
Diabetics are aware of ketosis because it is a symptom of their inability to process carbs.
Through dietary ketosis, some epileptics obtain relief from seizures.
In our family, we are looking at (our father's) Alzheimer's disease. Perhaps ketosois could help, but he is getting feeble and very strongly opposed to exercise. Our mother was particularly taken with a link to coconut oil, a medium chain triglyceride which seems to have some of the same effects as the ketones to nourish the brain, and some sources claim the effects begin the same day.
For ourselves, my sister and I tried out the extension of the overnight fast into early morning exercise.
For Dad, I cooked a lot with coconut oil - delicious. Mom is less of a cook.
Coconut oil detractors cite saturated fat and a strain on the heart over the years. At his age of 87, we guess it's going to be the heart or the brain.