Adrenaline (Epinephrine)
The acute fight-or-flight hormone that spikes within seconds of a threat, raising heart rate, blood pressure, and blood glucose and dilating airways to prime the body for action.
Too little may be associated with
Blunted acute stress response.
Too much may be associated with
Palpitations, anxiety, and high blood pressure; surges in pheochromocytoma.
Informational only — not medical advice.
Organ systems
Stimuli that influence it
Substances
Behaviors
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