A new study on stress and memory just landed — and it reframes what’s actually happening in your brain when you blank at the worst possible time.

The research shows that acute stress doesn’t just make recall harder. It limits how the brain forms associations between new memories as they’re being built. Dr. Samantha Yammine uses a sharp example: if a friend tells you they’ll be wearing a bright red jacket and later you spot that jacket outside the library, your unstressed brain connects the dots. Under stress, that link doesn’t form the same way. The hippocampus keeps things separate instead of integrating them.

That separation might be protective — stress could be shielding existing memories from being edited or overwritten. But it also explains why anxiety makes the same scenario feel brand new every time, which is exactly why cognitive reappraisal sits at the core of anxiety therapy: you have to consciously remind yourself that last time, it was fine.

Topics: stress and memory, acute stress brain effects, hippocampus memory formation, anxiety therapy cognition, memory reliability

GUEST: Dr. Samantha Yammine | http://samanthayammine.com

Originally aired on2026-06-01