A single dose of psilocybin eased symptoms of depression within days, with benefits lasting for more than three months compared to placebo , our new study has found. The study, published in the journal JAMA Network Open , involved 35 people with recurring depression. We randomly assigned participants to either receive psilocybin or a placebo. The placebo ( vitamin B3) mimicked some physical effects of the psychedelic, such as temporary skin flushing. Both groups also received psychological