Thank you for this article!  Alzheimer's can be prevented !  Number 1, 3,4,5,6,7 are backed by solid scientific data.  What should be added to this list is drinking silica water.  If you want to learn why these things prevent Alzheimer's, watch these videos about Brain Fitness https://www.youtube.com/watch?v=uGmYsFPHguA
 
https://www.youtube.com/watch?v=Gt5gfKxpHZU&t=28s