Phase 1 · Understand the Body — Why the disease behaves the way it does.
The One-Line Truth
The whole disease in one chain
Everything on this page exists to explain this line.
You worry too much about everyday things, nearly every day, for at least 6 months, and you cannot turn it off.
A Smoke Detector with Dead Batteries
Imagine a smoke detector (your amygdala) wired to a main control panel (your prefrontal cortex) with a battery backup (serotonin) that is supposed to manage the alarm. Normally, when the detector senses smoke, it goes off, but the control panel checks if there is actual fire, then tells the detector to quiet down once everything is safe. In GAD, three things break at once: the battery (serotonin) dies, so the control panel cannot send the 'all clear' signal anymore; the detector becomes oversensitive and starts screaming at tiny wisps of steam from your coffee; and the emergency broadcast system (norepinephrine) stays stuck on full volume, blaring danger all day even when the detector finally quiets for a moment. You are left with an alarm that fires constantly, a control center that cannot turn it off, and your whole body in permanent fight-or-flight mode because the messenger keeping everything calm has flatlined.
American Psychiatric Association DSM-5-TR (2022) · APA Practice Guideline for the Treatment of Patients with Panic Disorder (2009, reaffirmed 2023) · Cochrane Review: Psychological therapies for generalized anxiety disorder · NICE Guideline: Generalised anxiety disorder and panic disorder in adults (2019, updated 2023) · reviewed 2026-07-07