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From www.realclearscience.com 2021-03-02 09:12:18 Ross Pomeroy, RealClearScience Ross Pomeroy, Sorting out all of these communications and their possible effects is now the focus of a burgeoning field: neurogastroenterology. It’s increasingly apparent that what goes on in the gut affects the brain and vice versa. Nowhere is this more obvious than with mood. More than 95% of the body’s serotonin, a hormone that stabilizes mood, feelings of well-being, and happiness, is found in the enteric nervous system. Is it any wonder then, that an empty stomach can make you irritable and impatient, clear signs of ‘hanger’? About half of the body’s dopamine is found in the gut, too. As the primary ‘pleasure hormone,’ it’s responsible for the bliss you feel while imbibing a milkshake or devouring a fried chicken sandwich.