I recall reading an article saying that doctors were nearly ready to begin calling Alzheimer's disease Type III diabetes. This result would lend credence to that notion.
The American Heart Association literally has an infographic on their website that tells people to eat more polyunsaturated fats (i.e. vegetable oils) and completely avoid coconut oil (https://healthyforgood.heart.org/eat-smart/infographics/the-...). Anyone who has studied the science behind ketosis knows this is completely bonkers.
I read an article just a few days ago that discussed how sleep is important for cleaning out plaques from the brain like those associated with Alzheimer's. Unfortunately I flush my browser history frequently or I would post it.