People, in particular children who are held captive by the sickos, are traumatised such as beatings and tortured or scared out of their wits which produces adrenaline. This is then released into their body via the bloodstream and the sickos then bleed them. Not killing them, but to get satisfactory quantities out of their small bodies. This is adrenochrome. Most all of the elites and lesser scum ingest it and get high off this. It is better than cocaine so they say.
To add to what Yoda wrote, it's considered to be a fountain of youth. Ever wonder why old actresses look so young? Adrenochrome. And yes, it's very addictive. When ingested it will also cause aggression. They give it to soldiers in their food unbeknownst to them.
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