can scientist freeze people and bring them back to life???

Answer 1

Cryonics:
cry·on·ics (krī-ŏn'ĭks) n. (used with a sing. verb)
"The process of freezing and storing the body of a diseased, recently deceased person to prevent tissue decomposition so that at some future time the person might be brought back to life upon development of new medical cures."
From: http://www.answers.com/cryonics&r=67...

The practice of cryonics has been around since the middle 20th century and continues to grow today. The basic premise of cryonics is that a person who is legally dead may be frozen and stored at extremely low temperatures and may one day be thawed and resuscitated again when the necessary technology is available. The causes of death, such as cancer for instance, may also be curable, allowing the patient to return to his or her normal life. One of the greatest concerns for patients during cryopreservation is the potential damage done to the body by the freezing process (Merkle, 2001). Although the first attempts were rather crude in this respect, today the methods are becoming much more sophisticated.

The first person to ever become cryopreserved was a California psychology professor named James Bedford (Harris, 1994), who was simply immersed in liquid nitrogen at a temperature of -321°C. For the next decade, several other people were cryopreserved but were eventually thawed again due to a lack of funding. Today, approximately 60 people have had their bodies or, less expensively, their heads cryopreserved (Kluger, 1996) with hundreds more signed up to do so when their time comes (Harris, 1994). The cost of such an endeavor can be as low as $28,000 provided that the arrangement has been made ahead of time (Ettinger, 1998).

So far, scientists have made significant progress in developing the technologies necessary for cryopreservation. Already, researchers have been able to successfully freeze and thaw human embryos, sperm, skin, bone, bone marrow, as well as red and white blood cells (Merkle, 2001). The use of "antifreezes" such as glycerol have proven to be moderately worthwhile at reducing ice damage caused during the freezing procedure. A new procedure involving cryoprotectants along with ice blockers, called vitrification, is supposedly able to eliminate the formation of ice crystals entirely (Merkle, 2001). Cryopreservation may allow people dying today to be resuscitated back to immortality in the future."

Answer 2

There is no evidence of this and it is unlikely that putting people into a deep freeze will ever work. Formation of ice is the problem and unless you could freeze the whole body to something like -80 degrees in less than a second and then warm it up to 0 degrees or higher in the same time then the problem looks fairly insurmountable.

On the plus side it appears as though "almost frozen" looks to be pretty effective at stopping biological systems. The benefit of this is that a gentle rewarming should start things going again without too many problems. That process looks like it might work although there may be a time limit for survival nonetheless.

Answer 3

Cryonics:
cry·on·ics (krī-ŏn'ĭks) n. (used with a sing. verb)
"The process of freezing and storing the body of a diseased, recently deceased person to prevent tissue decomposition so that at some future time the person might be brought back to life upon development of new medical cures."
From: http://www.answers.com/cryonics&r=67

The practice of cryonics has been around since the middle 20th century and continues to grow today. The basic premise of cryonics is that a person who is legally dead may be frozen and stored at extremely low temperatures and may one day be thawed and resuscitated again when the necessary technology is available. The causes of death, such as cancer for instance, may also be curable, allowing the patient to return to his or her normal life. One of the greatest concerns for patients during cryopreservation is the potential damage done to the body by the freezing process (Merkle, 2001). Although the first attempts were rather crude in this respect, today the methods are becoming much more sophisticated.

The first person to ever become cryopreserved was a California psychology professor named James Bedford (Harris, 1994), who was simply immersed in liquid nitrogen at a temperature of -321°C. For the next decade, several other people were cryopreserved but were eventually thawed again due to a lack of funding. Today, approximately 60 people have had their bodies or, less expensively, their heads cryopreserved (Kluger, 1996) with hundreds more signed up to do so when their time comes (Harris, 1994). The cost of such an endeavor can be as low as $28,000 provided that the arrangement has been made ahead of time (Ettinger, 1998).

So far, scientists have made significant progress in developing the technologies necessary for cryopreservation. Already, researchers have been able to successfully freeze and thaw human embryos, sperm, skin, bone, bone marrow, as well as red and white blood cells (Merkle, 2001). The use of "antifreezes" such as glycerol have proven to be moderately worthwhile at reducing ice damage caused during the freezing procedure. A new procedure involving cryoprotectants along with ice blockers, called vitrification, is supposedly able to eliminate the formation of ice crystals entirely (Merkle, 2001). Cryopreservation may allow people dying today to be resuscitated back to immortality in the future."

From http://web.grinnell.edu/courses/sst/f01/SST395-01/PublicPages/Perfect%20Bodies/LifeExtension/subtopics/cryonics.htm

Answer 4

Yes, they can freeze people and no, they can't bring them back to life.

Answer 5

Nope. you freeze, every cell in your body ruptures. Now they can chill you down very cold and do surgery w/o oxygen for hours, but freezing is fatal.

Answer 6

We freeze them but can't bring them back to life.

Answer 7

i think no, bcoz human being need a media that can transport the digestive food we ate and other useful materials for your survival.with such happen the blood most kept in approprete temp i.e 37c.so at 0c there is problem

Answer 8

In certain circumstances people suffering from hypothermia, have been almost clinically dead and been brought back. But no one has actually frozen anyone and brought them back as yet.

Answer 9

when i was a kid i froze a fly for 24 hrs then took it from the freezer, let it come to room temp and lo and behold he began to move, i removed the lid of the jar and he flew away...so i played god and he got one more day added to his life. humans ? i haven't tried that one yet...any volunteers?

Answer 10

Cryogenically speaking, No