tDCS is a noninvasive brain stimulation that modulates cortical activity via weak currents, promoting plasticity. Evidence is strongest for depression (~33% response vs 17% sham), especially as adjunct therapy. It’s well tolerated but investigational; effects in other disorders are uncertain.
Psychedelic psychiatry is moving from fringe research to mainstream clinical practice. An overview of psilocybin, MDMA, and ketamine — including benefits, risks, and what the evidence supports.