Anxiety disorders affect 19.1 percent of US adults — 42.5 million people — making them the most common mental health condition in the country. Yet only 1 in 4 people with an anxiety disorder receives any treatment. This complete guide covers all 6 major types from GAD to panic disorder and social anxiety, the biological causes including amygdala hyperactivity and HPA axis dysregulation, and the full treatment spectrum from CBT and SSRIs to Pregabalin and the correct role of b