Faye, really! I know it is kindly meant but...The one thing we do know about coconut oil is very high in saturates and therefore not a very good oil to seek out. Bad for the arteries.
Even on this site, which is flogging coconut oil as hard as it can, as the cure for all ills says:
Coconut Oil and Alzheimer's Disease: There are reports of research conducted by Dr. Newport stating that coconut oil is useful for treating Alzheimer's disease. Apart from this there is no scientific evidence or traditional knowledge or coconut oil being used for treating Alzheimer's. It was also not known traditionally that coconut oil helps in the brain function.
This is very very flimsy "evidence" based on the suppositions of one person. In other words it is not evidence at all. The internet is awash with people selling various foods as being good for serious diseases on the basis of no evidence at all. This site is an outrageous example of such marketing.