You don’t have to look hard to find truth, and there’s people who will point you in the right direction.
One direction is in the tv and movie culture we consume. Messages and mysteries lie therein. Many nuggets can be found in the old Star Trek series of the 60s.
One such show is “The Deadly Years”: Season 2, Episode 12. Kirk and key members of his crew go to a planet with a colony that has aged rapidly. Only two are found still alive. This affects everyone in the landing party except Chekhov. It was later discovered in the show that he was the only one who reacted with fear at the sight of a dead human. Meaning his adrenaline kicked in and prevented him from aging unlike the others. They race to create it since they had stopped producing it for something else. It reverted everyone back to their youthful selves just in time except for the yeoman who died.
The adrenaline made them young again.
If there wasn’t anything so obvious to those in the know, I don’t know what is.
Obvious to those with eyes to see in a modern storytelling of this “youth-making potion” is in the movie “Doctor Sleep”-Stephen King’s sequel to “The Shining”. A group of evil, vampiric people who know no age or death —complete with a Marina Abramovich look-a-like— hunt children to feed off of and make themselves forever young.
Watch either of these and your eyes will hopefully not be wide shut.