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Can lack of sleep cause panic attacks?

Last updated: October 15, 2026

Sleep loss is not known to cause panic disorder on its own, but it makes the brain's emotional center more reactive and raises stress hormones, which may make panic attacks more likely in people who are already prone to them.

The threshold effect

In a brain-imaging study of healthy young adults, the amygdala, the brain's alarm system, was about 60% more reactive to negative images after a night without sleep (Yoo et al., 2007; Walker, 2017). For someone predisposed to panic, that can make a normally manageable trigger feel bigger.

Cortisol and arousal

Sleep loss also raises cortisol, the stress hormone: after a night of partial or total sleep deprivation, evening cortisol levels were 37–45% higher than the day before (Leproult et al., 1997). A body that is already on alert may tip into anxiety more easily.

The intervention

Getting back to regular, sufficient sleep is a sensible part of managing anxiety, and CBT for insomnia can be combined with anxiety treatment. If you have panic attacks, talk to a doctor or therapist.

Sources

1. Matthew Walker, Why We Sleep (Scribner, 2017). Why We Sleep: Unlocking the Power of Sleep and Dreams
2. Yoo et al., Current Biology, 2007. The human emotional brain without sleep: a prefrontal amygdala disconnect
3. Leproult et al., SLEEP, 1997. Sleep loss results in an elevation of cortisol levels the next evening