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Summary: out of date link (for Yerba Mate article) takes users to a malware site; found a better link instead.
Changed:
< * [http://www.brainready.com/blog/yerba_mate_vs_coffee_which_.html Brainready Blog post - Yerba Mate vs Coffee]
to
> * [http://guayaki.com/images/uploads/200709281559481441_brain%20ready.pdf Blog post (originally from the now-defunct Brainready site) - Yerba Mate vs Coffee (PDF)]
See this briefing (link is broken) from the Society for Neuroscience on the effect of nutrition on the brain.