The Psychology Of Yogurt | Wired Science | Wired.com
This research shows that the immateriality of mind is a deep illusion. Although we feel like a disembodied soul, many feelings and choices are actually shaped by the microbes in our gut and the palpitations of our heart. Nietzsche was right: “There is more reason in your body than in your best wisdom.”

Also see this post regarding gut brain from 2005.

It has long been my position that the brain is not the isolated seat of mind. While it is, perhaps, the main switching station, it works and relies on the entire body (and perhaps even more, if we consider that consciousness may not be strictly localized). This might rain on Kurzweil’s parade, where he desires to analyze the brain with nanobots in order to upload himself- whatever “himself” means – into a computer/robot/new body. Perhaps it simply complicates matters and widens the area of discovery, from the brain to the entire body. Very interesting.