best guess: cannibals figured out how eating human in different states caused different effects. they narrowed it down to absolute fear in their victims and a age rage for potency.

This makes no sense.

artificial adrenochrome I assume was stubbled on too. the EpiPens, when aged (expire) to a certain point, there is a chemical reaction that creates artificial adrenochrome.

This is not artificial adrenochrome. It's the same stuff. Adrenaline or EPInephrine.

Epinephrine aka Adrenaline is not stable and metabolizes very quickly in the presence of light, air, heat or moisture. It becomes adrenochrome. Not artificial.

They first isolated Adrenaline over a hundred years ago. It was found in both Europe when they called it Adrenaline and in the US where the generic is called epinephrine. At some point they noticed it would turn pink if exposed to air.....this is a new substance adrenochrome which was first called pink adrenalin.

Takeways Adrenalin has been able to be created in a lab for 120 years. This is the same stuff in people. It's not "artificial." Adrenalin when exposed to air will oxidize into adrenochrome. this is when you mentioned in aged or damaged EpiPens An EpiPen will contain way way way more adrenaline that any human body.

This is why the whole magic powers of adrenochrome theory falls about. An epi pen is $200. If my math is right an Epi Pen contains like a million times more of the hormone than a human body. That's why is works. It brings you out of toxic shock by giving you way more of the stuff than your body can produce.