Any natural chemical substance produced by the body that acts like a hormone on nearby cells or tissues (also called autacoid).
From Greek 'autos' (self) plus 'akos' (remedy). The term describes substances the body makes to regulate itself, similar to remedies.
Autocoids are your body's internal pharmacy—prostaglandins, histamines, and other molecules your cells produce to talk to each other. They're one reason your immune system knows when to calm down.
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