Nov
5
do you believe in cryogenics?
Filed Under Medicine
ur worst nightmare asked:
u know where they like freeze your brain or something and then they bring u back to life??? is it real???
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u know where they like freeze your brain or something and then they bring u back to life??? is it real???
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4 Responses to “do you believe in cryogenics?”
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They use cryogenics for a few other things such as freezing cancerous cells in various parts of the body.
For humans the technology is not there. The concept is not far fetched for simple organisms. For example, they have brought back to life cells that are thousands of years old. There are organisms like bugs and seeds that lie dormant in a dried up state for years, but when water is added they come to life.
This also raises other issues like accidentally bring back to life a deadly disease or virus.
For humans, the closest thing to this is Hypothermia. People who drown in cold water have a better chance of being resuscitated after a longer period than people who drown in warmer water.
for single celled organisms, you can freeze them and bring them back, but humans cannot be brought back with current technology, due to ice crystals forming in body fluids, tearing up blood vessels and organs. essentially it is body-wide frostbite, and until medical treatment becomes advanced enough to save an individual from such greivous injuries, it is not feasible.
You do not MEAN **cryogenics**, which is low temperature physics: “The branches of physics and engineering that involve the study of very low temperatures, how to produce them, and how materials behave at those temperatures”. I expect that what you MEAN is “Do you believe in cryonics”.
Cryonics organizations make every attempt NOT to “freeze people”. Freezing causes ice damage, which is why modern cryonics organizations replace body water with anti-freeze mixtures. Animal experiments done with these mixtures indicate excellent preservation of brain structure at cryogenic temperatures when viewed under high-resolution electron microscopes. The same preservation is expected in humans who are receiving the same kind of treatment. The avoidance of freezing by cryoprotectant (anti-freeze) replacement is called “vitrification”.
Just because a person is legally dead (heart has stopped) does not mean all the cells in the body have died. Exactly the opposite is true: almost all of the cells are still alive. That is why rapid cooling can maintain body tissues.
Even with good preservation of body tissues by cooling and vitrification, future science will be required to cure presently incurable diseases and to rejuvenate elderly people to a youthful condition. Aging, disease, and damage due to cooling low temperature are all potentially things that can be repaired by nanotechnology and other future molecular repair technologies. Cryonics will work only when future medicine has mastered these repair technologies. It seems inevitable, with the progress of science, that these repair technologies will come to exist.
So there is every reason to believe that people preserved today by cryonics organizations may be restored to youth and health by future science. When that happens, cryonics will have worked.