Cortisol Is a Molecule That Crosses the Blood Brain Barrier

Cortisol is a molecule that crosses the blood brain barrier. When cortisol is expressed chronically over time at high levels it actually has deleterious effects on the brain. And you know what's going on when a person can't really recover when they're in constant sympathetic nervous system fighter flight arousal, day after day after day. Yeah, so the cumulative impact is very significant and quite Deleterious.