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Sep 3, 2026 Definitions

Definition Day: Set and Setting & Fear Extinction

Two more terms worth slowing down on.

Set and Setting: mindset and environment shaping the experience — a phrase that sounds like vibes but has real safety weight behind it. Our reporting on overseas clinic safety found that poor setting — unscreened staff, no medical oversight, patients dosed without real preparation — was a common thread across the worst documented outcomes, not just an aesthetic afterthought.

Fear Extinction: the process by which a learned fear response fades when the feared stimulus keeps occurring without the bad outcome attached to it — a leading model for how trauma therapy works. Animal studies found MDMA enhances this process through a BDNF-dependent mechanism in the amygdala, a proposed reason the VA's MDMA-PTSD trials pair the drug with therapy sessions rather than administering it alone.

Full entries, plus 140 other terms, are in our Encyclopedia.

Read at Altitude