So, I have no concrete proof whatsoever to back this.
Only personal, circumstantial evidence exists
for my metaphorical allusion that reads as follows:
"Wine is a fountain (bottle) of youth."
Q: How old are you, Allie?
A: I'm 34-years-old.
(Most people find it hard to believe I have two boys - 11 & 13 in age.)
Perhaps there are in fact scientific agents in wine
that do indeed provide youthful restoration &/or preservation,
but I have no idea what they are or if there's any chance they exist.
What I do know is that you are only as 'old' as you feel,
and when I sip I have a sense I'm 'younger before my years',
as opposed to wiser beyond them.