Enzymes will do the same thing.or close.if they are so gung ho,they create enzymed plants that can be fed to animals.or extract enzymes from longevity animals and feed them to humans etc.

Say a galapogos tortoise fertile egg raw.enough of these will make you look turtlish but you will live a very long time.i suspect this is why the rich fund zoos.
Eating certain squid polyps may mean immortality.take these polyps and use as vegetable food then eat the vegetables.
You may have a clone of yourself growing out of your dick though.