Anxiety exists to keep us alive. But how can you tell when it crosses the line from survival instinct to serious problem? For the more than 30-percent of Americans who will experience an anxiety disorder, stigma around mental health problems makes it hard to find out. Dr. Jen breaks down where those stigmas originated, the science behind our brain’s threat-detection system, what makes it malfunction, and the most effective ways of treating it. Thanks to our guests, Dr. Kali Cyrus and Professor Helen King, for sharing their insights in this episode. Read the full text transcript at go.ted.com/BSTscript7