Can People Be 'Frozen' and Thawed Out?

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Discussion Overview

The discussion revolves around the concept of cryonics and the possibility of freezing humans for future revival, including the scientific and biological challenges associated with this idea. Participants explore various aspects of cryopreservation, including its application to microorganisms and embryos, as well as the theoretical implications for larger organisms.

Discussion Character

  • Exploratory
  • Debate/contested
  • Technical explanation

Main Points Raised

  • Some participants express skepticism about the feasibility of freezing humans and successfully reviving them, citing damage to bodily tissues during the freezing and thawing processes.
  • Others mention that while certain organisms, like some frogs and worms, can survive extreme temperatures due to specialized adaptations, these mechanisms do not apply to humans.
  • There are references to successful cryopreservation techniques used for bacteria and human embryos, which can be frozen and thawed without significant damage, but participants note that these methods may not translate to larger multicellular organisms.
  • Some participants discuss the existence of cryonics services, highlighting the financial aspects and the belief that resuscitation after death is unlikely.
  • One participant recalls a fictional representation of cryonics in the film "Vanilla Sky," suggesting that public interest in the concept may be influenced by media portrayals.
  • Discussion includes examples of extremophiles, organisms that can survive extreme conditions, as a point of comparison to human cryonics.

Areas of Agreement / Disagreement

Participants generally agree that the concept of freezing and reviving humans is currently not feasible, but there is no consensus on the potential future of cryonics or the implications of existing cryopreservation techniques for larger organisms.

Contextual Notes

Limitations include the unresolved challenges of uniform freezing and the need for appropriate cryoprotectants for multicellular organisms, which complicate the application of current techniques used for simpler life forms.

decibel
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is it true they can freeze ppl up and thaw em back out...

i heard a story about this, and about a girl with cancer, she said freeze her and when they found a cure wake her up or something, I am not sure if this is a rumor or not, but just checking...
 
Biology news on Phys.org
I don’t think they can actually ‘freeze’ people in the sense that all their bodily functions would stop and then be restarted at some future point. Though there have been many people who wished that upon their death they be frozen in the hopes that in the future they may be brought back to life. The problem with this is that freezing and then thawing a body damages bodily tissue, not to mention that we haven’t found a way to raise people back from the dead.
Anyway, most people who have this done are already dead. Actually I’ve never heard of a case where a living person has decided to be frozen while they’re still alive.
 
does anyone remember vanilla skies with Tom Cruise

to my knowledge its still impossible, but lots of people wish it was
 
I saw a thing on TV about a kind of worm that lives on glaciers in the North. They showed film of it just squirming forward on the icey surface of the glacier, looking as moist and flexible and happy as could be. It turns out it is not a water based creature, but one that has evolved to bathe all its cells in anti-freeze (glycine? glycol? glycerine?). They said, in fact, it was more in danger of dying when the temerature got too hot than too cold. It ate algae.
 
i saw this creature, it's microspcopic, that can live in extreme cold, ice and worse, extreme hot, magma, and even space, it changes itself so it survives in the type of environment its in
 
decibel said:
is it true they can freeze ppl up and thaw em back out...
I'm not sure this is possible, I've known a few people so cold nothing could thaw them out... :redface:
 
"Freeze People" = "Reefer Man"

The more advance life forms (e. g., frogs) that can sustain complete freezing freeze from the inside out due to a specialized circulatory system containing a modicum of ethylene glycol.
 
i_wish_i_was_smart said:
i saw this creature, it's microspcopic, that can live in extreme cold, ice and worse, extreme hot, magma, and even space, it changes itself so it survives in the type of environment its in

Well, we can freeze bacteria down to -80 degrees C to store them. Same with human embryos used for in vitro fertilization. Then thaw them when ready to use.

But there are issues with larger, multicellular organisms, that would make this quite challenging, including the time it would take to freeze all the tissue uniformly (you'd get the skin frozen long before your intestines or muscle), and in penetrating all the tissue and organs with a proper cryoprotectant material (antifreeze of some sort). Even when freezing things like sperm for artificial insemination, the components of the cryoprotectant need to be specially formulated for each individual species.
 
  • #10
The Cryonics institute in Detroit offers its services
http://www.cryonics.org/
for a one time only payment of 28000 dollars it freezes all your body after death. I really doubt that you can resuscitate a person after death.

I saw the spanish version of "Vanilla Sky". It was called "Abre tus ojos", and was also interpreted by Penelope Cruz
 
Last edited:
  • #11
Moonbear said:
Well, we can freeze bacteria down to -80 degrees C to store them. Same with human embryos used for in vitro fertilization. Then thaw them when ready to use.

But there are issues with larger, multicellular organisms, that would make this quite challenging, including the time it would take to freeze all the tissue uniformly (you'd get the skin frozen long before your intestines or muscle), and in penetrating all the tissue and organs with a proper cryoprotectant material (antifreeze of some sort). Even when freezing things like sperm for artificial insemination, the components of the cryoprotectant need to be specially formulated for each individual species.
this creature, i saw on the discovery channel, it was number 1 in the top ten ultimate survivors, not this is a whil ago, this creature is practicaly invisible to the naked ey, it had like six legs, can withstand under -80celcius, its totally crazy
 

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