@wikipedia It's come up as a question of identity in people within SF already as a question of when does 'you' cease to be if your body parts are replaced over time, yet for that entire time you maintain the interrupted stream of consciousness we call our self awareness. (interruptions: sleep, comas, blackouts, anesthesia.)
I'd note that in the human body, it is considered that every cell is replaced at least once every 15 years. - https://www.questdiagnostics.com/patients/blog/articles/do-my-cells-really-change-every-7-years
You're you, as everything changes.