A single dose of psilocybin may rewire the brain for lasting relief from chronic pain and depression-like symptoms

Psilocybin may rewire brain circuits involved in both pain and mood, offering potentially lasting relief from chronic pain and depression-like behavior. In mouse models of chronic nerve injury and inflammatory pain, researchers report that a single dose reduced pain and pain-related anxiety and depression-like behaviors for nearly two weeks. The work links these effects to brain signaling in the anterior cingulate cortex (ACC), a region tied to emotional and pain processing. The study suggests psilocybin acts through serotonin receptors (5-HT2A and 5-HT1A) and may work by modulating circuits rather than directly targeting the injury site. Researchers also tested psilocin injections by region, finding ACC delivery produced similar benefits while spinal cord delivery did not, supporting a brain-circuit mechanism. The page notes that further research is needed to establish dosing, durability, and safety in humans.