Five years ago, a research team at Stanford achieved what many in psychiatry had long hoped for: A treatment for severe depression that worked rapidly, reliably, and without medication. In their 2020 SAINT trial, 19 out of 21 participants with treatment-resistant depression achieved remission after just five days of transcranial magnetic stimulation (TMS). It was a landmark moment. Yet today, the treatment remains almost entirely inaccessible to the average patient.