Can a magnetic pulse to the forehead restore what drugs have broken in the addicted brain? Pharmacologist Marco Diana explains how chronic drug use produces a hypodopaminergic state, a massive downregulation of the dopamine system, and why transcranial magnetic stimulation may offer a physiological alternative to treating addiction when no effective drugs exist. Subscribe for more from the Convergent Science Network podcast series. Marco Diana joins Paul Verschure and Tony Prescott to trace the neurobiology of addiction from the initial dopamine surge through chronic adaptation to the devastating consequences of withdrawal. The hypodopaminergic hypothesis holds that prolonged drug use, whether alcohol, cocaine, or opioids, forces the dopamine system to compensate for constant external stimulation by reducing its baseline activity. When the drug i ...