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well, Alzheimer's has been highly correlated with diabetes (which diabetes is correlated with gum disease), so its hard to tell. If I were to guess, given if there is a correlation with gum disease and Alzheimer's, I would bet my money that what ever causes gum disease also causes at least some Alzheimer's - not that being treated for gum disease causes it.

Diabetes 1 or 2?

If #2 then I'd venture to say that in many / most cases that correlates with abuse of sweets (read: sugar) which would all effect the teeth (and perhaps in turn the gums).

It's unlikely that simple. That said , I'd venture to say aggregate increase in sugar consumption correlates to increases in Alzheimer's. Yes, as do plenty of other mod cons.

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