Comment by pdfernhout

Exercise, sleep, omega-3s, and fasting also can improve memory.

https://www.health.harvard.edu/blog/regular-exercise-changes...

https://www.sleepfoundation.org/articles/why-do-we-need-slee...

https://www.medicalnewstoday.com/articles/252198.php

https://www.collective-evolution.com/2015/12/11/neuroscienti...

But of course big pharma can't make any money from these...