QUESTION 1: What is the universal trigger that always starts the anxiety process?

2nd QUESTION: What stress hormone is produced when the brain sends the alarm signal?

The brain initiates it before it can visually process all the details of the threat
It takes several minutes to fully activate
It is only activated after having logically thought about the danger
It is a slow but very powerful reaction

When the protection system is never activated
When it is only activated in the face of real and obvious dangers
When the protection system is repeatedly activated in the face of threats that are only imaginary
When the body does not produce enough adrenaline to react