Have you heard of the concept of reverse aging? Some species of Jelly fish are considered immortal since they don't die. They change forms. Scientist are looking into using exogenous DNA from Jelly fish and inserting it into humans to trigger reverse aging. Reversing aging is all about reversing senescence. i.e. lengthening back the telomeres, etc. Look into it.

That was a great read. Thanks for sharing.