Fitness in 40s, 50s Tied to Later Dementia Risk

And since I was fit as a fiddle prior to stroke, maybe I'm good.
http://www.medpagetoday.com/Psychiatry/Dementia/37184?
I liked seeing this paragraph except for the education part.
The risk of all-cause dementia did not appear to be affected by whether participants had a stroke during follow-up, nor did educational attainment appear to make a difference, the researchers reported online in Annals of Internal Medicine.