... and slow down the onset of dementia!
This was the finding of some research done at the Rotman Research Institute in Canada, reported at Medical News Today.
Of 184 patients, "mean age of onset of dementia symptoms in the monolingual group was 71.4 years, while the bilingual group was 75.5 years."
This was after considering the effects of other factors like cultural differences, level of formal education and employment history.
I'd like to see a larger sample space, but this is definitely interesting.
[The painting is entitled "Flight from Dementia" by Jan Witten Sewall]