Instituto de Ciência Política - IPOL

Can A Human Be Frozen And Brought Back To Life?

Can A Human Be Frozen And Brought Back To Life?

We see it all the time in movies. A person gets frozen or put in "cryosleep" after which unfrozen at a later date with no growing old going down, or different sick effects.

Generally this occurs on goal, prefer to someone with an incurable disease hoping a cure exists in the future, or sometimes by chance, like somebody getting frozen in a glacier.

Is there any science behind "cryogenics"?
The science behind it does exist and the appliance of the observe is called cryonics. It’s a method used to retailer someone's body at an especially low temperature with the hope of at some point reviving them. This system is being frozen performed at this time, but the expertise behind it is still in its infancy.

Someone preserved this manner is said to be in cryonic suspension. The hope is that, if some­one has died from a disease or situation that is at the moment incurable, they can be "frozen" and then revived in the future when a treatment has been discovered.

Why wait till you’re dead to be frozen? Received’t or not it's too late then?
cryonicsIt’s currently illegal to carry out cryonic suspension on somebody who continues to be alive. Those who want to be cryogenically frozen must first be pronounced legally dead – which implies their coronary heart has stopped beating. Although, if they’re dead, how can they ever be revived?

In keeping with corporations who carry out the procedure, ‘legally dead’ will not be the same as ‘totally dead.’ Total loss of life, they claim, is the point at which all brain operate ceases. They declare that the distinction is predicated on the fact that some mobile brain function remains even after the center has stopped beating. Cryonics preserves some of that cell operate so that, a minimum of theoretically, the person may be introduced back to life at a later date.

How is Cryonics Performed?
After your heart stops beating and you might be pronounced legally dead, the corporate you signed with takes over. An emergency response crew from the facility immediately gets to work. They stabilize your body by supplying your brain with sufficient oxygen and blood to preserve minimal operate till you could be transported to the suspension facility. Your body is packed in ice and injected with an anticoagulant to prevent your blood from clotting throughout the trip. A medical crew is on standby awaiting the arrival of your body at the cryonics facility.

After you reach the cryonics facility, the precise freezing can begin.

Don’t they just drop you in an enormous pot of liquid nitrogen?
They could, and when you’d certainly be frozen, many of the cells in your body would shatter and die.

As water freezes, it expands. Since cells are made up of mostly water, freezing expands the "stuff" inside which destroys their cell walls and they die. The cryonics corporations must take away and/or change this water. They substitute it with one thing called a cryoprotectant.

Very similar to the antifreeze in an automobile. cryogenically frozenThis glycerol based mixture protects your organ tissues by hindering the formation of ice crystals. This process is called "vitrification" and permits cells to live in a form of suspended animation.

After the vitrification, your body is cooled with dry ice till it reaches -202 Fahrenheit. After this pre-cooling, it’s finally time to insert your body into the person container that shall be positioned into a metal tank stuffed with liquid nitrogen. This may cool the body all the way down to a temperature of round -320 degrees Fahrenheit.

The procedure isn’t cheap. It can value up to $200,000 to have your complete body preserved. For the more frugal optimist, a mere $60,000 will preserve your brain with an choice referred to as neurosuspension. They hope the technology sooner or later will allow them to clone or regenerate the remainder of the body.

So does it work?
Many critics say the companies that perform cryonics are simply ripping off prospects with the dream of immortality and they received’t deliver. It doesn’t help that the scientists who perform cryonics say they haven’t successfully revived anyone, and don’t expect to be able to do so anytime soon. The biggest hurdle is that, if the warming process isn’t executed at exactly the suitable velocity and temperature, the cells could form ice crystals and shatter.
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