Why can a human embryo be frozen, even for many years, then later thawed and live, but…

Question

…we can’t freeze a fully developed human and thaw them later and they’ll live?

In: Biology

Answer 1

It’s about how quickly the freezing agent can enter tissues. One cell is easy. Something the size of a gerbil, surprisingly, is easy – we can freeze and thaw them out. Interestingly, this task – thawing frozen gerbils – spurred the invention of the first microwave oven.  A human is just too big to flash freeze.    

Here’s Tom Scott with the story about frozen gerbils and the first microwave. He even interviews the scientist who invented it and thawed the gerbils.  https://m.youtube.com/watch?v=2tdiKTSdE9Y