However, their research didn’t show that knowing two languages deters Alzheimer’s disease, it only helps to delay symptoms.
Co-author John Grundy said: “Bilinguals and monolinguals eventually show the same number of Alzheimer’s disease cases.
“But bilinguals tend to be able to stave off those symptoms for longer. That’s fascinating to me.
“Maybe the most surprising thing about the study is the consistency of the effect. It’s a very robust finding.”
