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Why are we irritable when we don't sleep?

Researchers say that the brain's prefrontal cortex, which helps keep emotions in check, doesn't send out inhibiting signals as well when we're sleep-deprived. So we're moodier as a result.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.