Quote (Balla @ Jan 28 2014 06:45pm)
I would still like to see some studies done on that though. Several trials using probably the same group of people. Memory and other cognitive tests while fasted with high ghrelin, and after feeding and thus low ghrelin. Do it several times and see if statistical significance is reached
Like you said, I wouldn't expect a huge difference.
ghrelin also responds to insulin levels, so a spike can bring it momentarily up and then crash down. caffeine can keep you alert but not as aware / attentive etc.