Independent longevity researchers Vince Giuliano and Steve Buss believe that the number and content of scientific-study puzzle pieces have approached a critical threshold. It is now possible, they claim, to assemble a good explanation, in which natural body rejuvenation processes play a vital role. This comprehensive new explanation integrates existing theories and also highlights an age-reversal process they have identified and named 'younging'.

Vince and Steve believe that this emerging explanation constitutes a paradigm shift for the longevity science movement. Already-proven rejuvenation explanations and interventions can ONLY be properly understood to fit together via understanding recent evidence of ancient, evolutionarily-conserved mechanisms.