What is the function of serotonin on appetite?
                                
                                
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                                    5 min read                                
                            
                                Approximately 90% of the body's serotonin is produced in the gut, yet its function on appetite is primarily mediated by the brain. This complex neurochemical serves a dual role, influencing both homeostatic cues of fullness and the powerful hedonic motivations to eat for pleasure.