[topynate]

If the topic is tissue damage from sharp ice crystals, it's pretty handy to draw the distinction between cooling methods that cause that and ones that don't.

[samatman]

Yes, that's the relevant distinction in fact. Cryonics are the former, not the latter. Multicellular cryonic suspension is an unsolved problem after roughly the blastocyst stage.

[topynate]

As of last year we're up to doing rat kidneys. They're "heavily" damaged but they recover within a few weeks. To be sure, there's a long way from that to near-perfectly preserving a human brain, let alone a whole body.

https://www.statnews.com/2023/06/21/cryogenic-organ-preserva...