I haven’t read any of that research but I bet learning a foreign language would go a long way towards delaying Alzheimer’s as well.
You could write the research. That’s EXACTLY what it says!
I agree with learning a new language. I think learning and practicing to play piano would be a hedge against Alzheimer’s as well. Maybe any musical instrument. I was forced, kindly, to learn the piano and violin as a child and teen and I know it was “good” for me. I gave my son a choice :) he went with the trumpet which he plays and loves to this day.
Listening to music changes a person. All sorts of music. Growing up in my family I was exposed to Broadway musicals, classical, opera, Benny Goodman and assorted big bands, a bit of old American folk and hymns. I look back with gratitude and appreciation toward my family. Though I can’t explain how, I believe this musical variety made my brain “smarter”.