There is a group of sugars called "glyconutrients" that have been hailed as very important to nerve function without much research to back them up.
Today's news, however, carried an encouraging report of them doing great things with MS so there might well be something to it.
The story is at
http://www.sciencedaily.com/releases...0920122140.htm
A site that gives what seems to be good info on the sugars, where to get them, and even how to mix your own to save money is at
http://www.squidoo.com/eightsugars/
Hope springs eternal.