Healthy habits reduce dementia risk

The simple press release again. What if you can't do these things?
Mine is here;
Give me aspirin, marijuana,  some beer, some more dark beer, meditation,   and a volume of Shakespeare and I'll delay dementia until I die. And have a chat with these nuns.

http://www.cardiff.ac.uk/news/articles/healthy-habits-reduce-dementia-risk-12191.html
Researchers at Cardiff University in the U.K. studied 2,235 men and found that those who adopted all five, or even four, of these healthy behaviors experienced a 60 percent reduction in dementia and overall cognitive decline (with exercise being the strongest mitigating factor). Seventy percent fewer cases of heart disease, diabetes, and stroke were found in those men, compared to people who didn't practice any of the behaviors.

I guess I fell in the 30% category of getting diabetes, heart disease and stroke.
Thats why we need other things than these simplistic notions.