How Far Away Are We from an Anti-aging Pill/injection -- or Has It Already Been Invented for the Privileged Few?

I remember the telomere research that won a Nobel prize (which also has use for many diseases.) I also recall reading about something derived from astralagus root (but don't go taking this as it is useless until you get some kind of extraction and synthesize it or something.) Is there something on the horizon, and is it already here (but only given to people like those mysteriously non-aging actresses or the very wealthy)?

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