Brain Pathway Identified That Amplifies Nocebo Pain Responses

Summary: Researchers mapped the precise brain pathway that drives the nocebo effect, the biological phenomenon where negative expectations actively amplify physical pain. The research reveals that anticipation, fear, or social observation triggers the release of a neurochemical called cholecystokinin (CCK). This chemical travels along a newly identified pathway to turn up the brains internal volume on pain sensitivity. The findings provide direct, physical proof that nocebo pain is a real biolog...