There is an observation that donated organs sync to a biological age of the recipient.

https://www.inc.com/lucia-auerbach/can-transplanted-heart-be...

etoxin 34 minutes ago | parent | next [-]

Yeah, this had me thinking. Does transplanting older organs into younger bodies force the body to rejuvenate the transplanted organ to the recipients age.

Edit: your article say so, neat.

	▲	WhyNotHugo 27 minutes ago \| parent [-]
		I vaguely recall that it's the blood itself which has a big impact — to the point where blood transplants from younger blood could (temporarily) "rejuvenate" an older metabolism.

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moffkalast 22 minutes ago | parent | prev [-]

So in theory you could keep an organ alive perpetually if you kept transplanting it every fifty or so years?