Here is why you have to read original peer-reviewed research—not just the popular media's summary of it, or interim findings presented at conferences.

Red Wine Goes To Your Head - But Helps You Think - Medical News Today - April 3, 2009

"Red wine extract polyphenol resveratrol could improve mental performance on demanding tasks.
[...]
The results showed a change in blood flow to the brain and significant improvements in cognitive performance in the participants who had been given polyphenol resveratrol."

This is a surprising claim: nowhere have I seen resveratrol claimed or marketed as a cognitive enhancer. So I looked up…