Inside your brain, an ancient survival alarm monitors CO2, not oxygen. This system evolved to detect threats like suffocation, triggering urgent panic responses when CO₂ levels become unstable. But during panic attacks, this alarm misfires, often because breathing too fast lowers CO₂, fooling your brain into thinking you’re suffocating. Understanding this can change how we see anxiety! Nattie, E., & Li, A. (2022). Central chemoreceptors: Locations and mechanisms. Journal of Applied Physiology, 1
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