Researchers believe the presence of polyphenolic compounds in black maca root lend it these memory - enhancing properties. (blog.bartonpublishing.com)
Raw or minimally processed chocolate or cacao is rich in polyphenolic compounds such as epicatechin. (drjockers.com)
Walnuts also contain polyphenolic compounds such as pedunculagin which can reduce the inflammatory load on brain cells, enhance neural connections, and increase neurogenesis (new neuron creation in the brain). (ahealthblog.com)