My mom has alzheimers, and has eaten a very low fat/high carb diet her entire life, so I can believe it's a form of diabetes, even though she's always had normal blood sugars - "normal blood sugars" being a debatable term, since what's considered normal is pretty high these days.

If that's the case, then it would stand to reason that a diabetes drug could improve memory and help to reverse it. I hope they start conducting some trials on alzheimers sufferers soon to see if it's possible to slow down or reverse the horrible mind degeneration.