Of course there's the 'usual advice' on how best to protect yourself again developing dementia but, in this article (for example), we could substitute the word 'dementia' for 'common cold' or 'liver disease'.

Here, we'll simply state that fact that those with 'higher learning levels' are less likely to develop dementia.

We'll take a few snapshots from this article (for you to read in full at your leisure).

In addition to managing medical conditions that raise your dementia risk, Esther Oh, M.D., Ph.D., recommends keeping your mind active to preserve brain health. “This doesn’t have to involve crossword puzzles or buying an expensive computer program that challenges the brain,” she says. “Socializing with your friends, being engaged with your family and pursuing activities that interest you can help keep your mind working.” 

Research suggests that education helps the brain develop more synapses, which are the junctions between brain cells that relay information, “but we’re not entirely sure,” says Oh. More synapses may boost cognitive reserve, which may help prevent dementia.

It's impossible to tell whether increased brain activity 'burns off' or 'shuns' amyloid deposits but learning to play bridge, learning a new language, wrapping your head around why Pluto isn't a planet and then talking to your friends about it must be a good thing.

It's no real surprise that hearing loss can increase the risk of dementia - it's a conversation stopper.