Routinely administered, generally recognized as safe, compound appears to reverse cognitive decline.

This is a study done retrospectively after noticing improvements during stem cell treatments. They have applied for a patent for this new usage of "granulocyte macrophage colony stimulating factor". Guess this is as good a reddit as any for this. edit:I don't know why there is no link, probably just cognitive decline. http://hscweb3.hsc.usf.edu/blog/2012/06/21/gmcsf-treatment-associated-with-improved-cognition-in-cancer-patients-usf-moffitt-study-finds/