How coffee and donuts enhance memory

And how long do you think this will take to percolate to your hospital stay after your stroke?
So ask your doctor if your memory problems are because of a lack of sugar and coffee in the morning. Don't let them get away with, 'Its from your stroke'.
http://www.psychologytoday.com/blog/your-brain-food/201010/how-coffee-and-donuts-enhance-memory
I apologize in advance Amy.