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47-498: The Life Extension Society ( LES ) with its network of coordinators was the first cryonics organization in the world. It was founded by Evan Cooper in 1964 to promote cryonic suspension of people, and became the seed tree for cryonics societies throughout the US where local cryonics advocates would meet as a result of contact through the LES mailing list. The original LES ceased existence near

94-541: A chemical fixation step, sacrificing some structural preservation quality for less damage at the molecular level. Some scientists, like João Pedro Magalhães, have questioned whether using a deadly chemical for fixation eliminates the possibility of biological revival, making chemical fixation unsuitable for cryonics. Outside of cryonics firms and cryonics-linked interest groups, many scientists are very skeptical about cryonics methods. Cryobiologist Dayong Gao has said, "we simply don't know if [subjects have] been damaged to

141-587: A colloid was for many years the most effective of all artificially created cryoprotectants. Cryoprotectant mixtures have been used for vitrification (i.e. solidification without crystal ice formation). Vitrification has important applications in preserving embryos, biological tissues and organs for transplant . Vitrification is also used in cryonics , in an effort to eliminate freezing damage. Conventional cryoprotectants are glycols ( alcohols containing at least two hydroxyl groups), such as ethylene glycol , propylene glycol and glycerol . Ethylene glycol

188-437: A 61-year-old female writer of children's literature, became the first known Chinese national to have her head cryopreserved. Cryonics is generally regarded as a fringe pseudoscience. The Society for Cryobiology rejected members who practiced cryonics, and issued a public statement saying that cryonics is "not science". Russian company KrioRus is the first non-U.S. vendor of cryonics services. Yevgeny Alexandrov, chair of

235-509: A frozen state is not considered possible now. Large vitrified organs tend to develop fractures during cooling, a problem worsened by the large tissue masses and very low temperatures of cryonics. Without cryoprotectants, cell shrinkage and high salt concentrations during freezing usually prevent frozen cells from functioning again after thawing. Ice crystals can also disrupt connections between cells that are necessary for organs to function. Some cryonics organizations use vitrification without

282-418: A solution or of a material. In this way, the cryoprotectant prevents actual freezing, and the solution maintains some flexibility in a glassy phase. Many cryoprotectants also function by forming hydrogen bonds with biological molecules as water molecules are displaced. Hydrogen bonding in aqueous solutions is important for proper protein and DNA function. Thus, as the cryoprotectant replaces the water molecules,

329-410: A suitable subject for scientific research, but marketing an unproven method to the public is quackery". According to cryonicist Aschwin de Wolf and others, cryonics can often produce intense hostility from spouses who are not cryonicists. James Hughes, the executive director of the pro-life-extension Institute for Ethics and Emerging Technologies , has not personally signed up for cryonics, calling it

376-560: A worthy experiment but saying, "I value my relationship with my wife." Cryobiologist Dayong Gao has said, "People can always have hope that things will change in the future, but there is no scientific foundation supporting cryonics at this time." While it is universally agreed that personal identity is uninterrupted when brain activity temporarily ceases during incidents of accidental drowning (where people have been restored to normal functioning after being completely submerged in cold water for up to 66 minutes), one argument against cryonics

423-417: Is Polistes exclamans (a wasp). In this species, the different levels of cryoprotectant can be used to distinguish between morphologies. Cold-adapted arctic frogs , such as wood frogs , and some other ectotherms in polar and subpolar regions naturally produce glucose , but southern brown tree frogs and Arctic salamanders create glycerol in their livers to reduce ice formation. When glucose

470-618: Is Tomorrow Biostasis GmbH, a Berlin -based firm offering cryonics and standby and transportation services in Europe . Founded in 2019 by Emil Kendziorra and Fernando Azevedo Pinheiro, it partners with the European Biostasis Foundation in Switzerland for long-term corpse storage. The facility was completed in 2022. It seems extremely unlikely that any cryonics company could exist long enough to take advantage of

517-478: Is a practice that involves conventional cryoprotectants to store genetic material with the intention of future revival. Trehalose is non-reducing sugar produced by yeasts and insects in copious amounts. Its use as a cryoprotectant in commercial systems has been patented widely. Arctic fish use antifreeze proteins , sometimes appended with sugars, as cryoprotectants. Insects most often use sugars or polyols as cryoprotectants. One species that uses cryoprotectant

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564-477: Is an abjectly false hope that is beyond the promise of technology and is certainly impossible with the frozen, dead tissue offered by the 'cryonics' industry". Anthropologist Simon Dein writes that cryonics is a typical pseudoscience because of its lack of falsifiability and testability. In his view, cryonics is not science, but religion: it places faith in nonexistent technology and promises to overcome death. William T. Jarvis has written, "Cryonics might be

611-422: Is commonly used as automobile antifreeze ; while propylene glycol has been used to reduce ice formation in ice cream . Dimethyl sulfoxide (DMSO) is also regarded as a conventional cryoprotectant. Glycerol and DMSO have been used for decades by cryobiologists to reduce ice formation in sperm , oocytes , and embryos that are cold-preserved in liquid nitrogen . Cryoconservation of animal genetic resources

658-583: Is false; it was cremated and interred at Forest Lawn Memorial Park Cemetery . Timothy Leary was a long-time cryonics advocate and signed up with a major cryonics provider, but changed his mind shortly before his death and was not cryopreserved. Cryoprotectant For years, glycerol has been used in cryobiology as a cryoprotectant for blood cells and bull sperm, allowing storage in liquid nitrogen at temperatures around −196 °C. However, glycerol cannot be used to protect whole organs from damage. Instead, many biotechnology companies are researching

705-532: Is legal in Germany for an indefinite period. Writing in Bioethics in 2009, David Shaw examined cryonics. The arguments he cited against it included changing the concept of death, the expense of preservation and revival, lack of scientific advancement to permit revival, temptation to use premature euthanasia, and failure due to catastrophe. Arguments in favor of cryonics include the potential benefit to society,

752-399: Is medically alive. In France, cryonics is not considered a legal mode of body disposal; only burial, cremation, and formal donation to science are allowed, though bodies may legally be shipped to other countries for cryonic freezing. As of 2015, British Columbia prohibits the sale of arrangements for cryonic body preservation. In Russia, cryonics falls outside both the medical industry and

799-633: Is no fundamental barrier, given our current understanding of physics, to recovering its information content. Cryonics proponents go further than the mainstream consensus in saying that the brain does not have to be continuously active to survive or retain memory. Cryonicists controversially say that a human can survive even within an inactive, badly damaged brain, as long as the original encoding of memory and personality can be adequately inferred and reconstituted from what remains. Cryonics uses temperatures below −130  °C , called cryopreservation , in an attempt to preserve enough brain information to permit

846-702: Is not possible to reanimate a corpse that has undergone vitrification , as that damages the brain, including its neural circuits . The first corpse to be frozen was that of James Bedford , in 1967. As of 2014, about 250 bodies had been cryopreserved in the United States , and 1,500 people had made arrangements for cryopreservation of their remains. Economic considerations make it difficult for cryonics corporations to remain in business long enough to take advantage of any long-term benefits. The "patients", being dead, cannot continue to pay for their own preservation. Early attempts at cryonic preservation were made in

893-420: Is that a centuries-long absence from life might interrupt personal identity, such that the revived person would "not be themself". Maastricht University bioethicist David Shaw raises the argument that there would be no point in being revived in the far future if one's friends and families are dead, leaving them all alone, but he notes that family and friends can also be frozen, that there is "nothing to prevent

940-486: Is used as a cryoprotectant by arctic frogs, massive amounts of glucose are released at low temperature and a special form of insulin allows for this extra glucose to enter the cells. When the frog rewarms during spring , the extra glucose must be rapidly eliminated, but stored. Cryoprotectants are also used to preserve foods. These compounds are typically sugars that are inexpensive and do not pose any toxicity concerns. For example, many (raw) frozen chicken products contain

987-571: The Cryonics Institute ; his corpse was cryopreserved in 2011. In 1981, Robert Nelson, "a former TV repairman with no scientific background" who led the Cryonics Society of California, was sued for allowing nine bodies to thaw and decompose in the 1970s; in his defense, he claimed that the Cryonics Society had run out of money. This lowered the reputation of cryonics in the U.S. In 2018, a Y-Combinator startup called Nectome

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1034-601: The Russian Academy of Sciences commission against pseudoscience, said there was "no scientific basis" for cryonics, and that the company was based on "unfounded speculation". Scientists have expressed skepticism about cryonics in media sources, and the Norwegian philosopher Ole Martin Moen has written that the topic receives a "minuscule" amount of attention in academia. While some neuroscientists contend that all

1081-407: The 1960s and early 1970s; most relied on family members to pay for the preservation and ended in failure, with all but one of the companies going out of business and the corpses thawed and disposed of. The remaining organization, Alcor , uses a patient care trust to ensure that their preservations can be supported indefinitely. Cryonicists argue that as long as brain structure remains intact, there

1128-405: The biological material retains its native physiological structure and function, although they are no longer immersed in an aqueous environment. This preservation strategy is most often utilized in anhydrobiosis . Mixtures of cryoprotectants have less toxicity and are more effective than single-agent cryoprotectants. A mixture of formamide with DMSO ( dimethyl sulfoxide ), propylene glycol, and

1175-515: The cause of death. In many cases, extensive tissue regeneration would be necessary. This revival technology remains speculative. Historically, people had little control over how their bodies were treated after death, as religion held jurisdiction over the matter. But secular courts began to exercise jurisdiction over corpses and use discretion in carrying out deceased people's wishes. Most countries legally treat preserved bodies as deceased persons because of laws that forbid vitrifying someone who

1222-405: The dead back to life and treat the diseases that killed them. Mind uploading has also been proposed. Cryonics can be expensive. As of 2018 , the cost of preparing and storing corpses using cryonics ranged from US$ 28,000 to $ 200,000. At high concentrations, cryoprotectants can stop ice formation completely. Cooling and solidification without crystal formation is called vitrification . In

1269-421: The development of other cryoprotectants more suitable for such uses. A successful discovery may eventually make possible the bulk cryogenic storage (or "banking") of transplantable human and xenobiotic organs. A substantial step in that direction has already occurred. Twenty-First Century Medicine has vitrified a rabbit kidney to -135 °C with their proprietary vitrification cocktail. Upon rewarming,

1316-586: The disposal of the girl's body, although the judge urged ministers to seek "proper regulation" for the future of cryonic preservation after the hospital raised concerns about the competence and professionalism of the team that conducted the preservation procedures. In Alcor Life Extension Foundation v. Richardson , the Iowa Court of Appeals ordered the disinterment of Richardson, who was buried against his wishes, for cryopreservation. A detailed legal examination by Jochen Taupitz concludes that cryonic storage

1363-563: The end of the 1960s, but an organization with the same name and similar objectives was incorporated in Maryland in 1992. In 1962, Cooper privately published a manuscript named Immortality: Physically, Scientifically, Now under his pseudonym, Nathan Duhring. The book is considered by Michael Darwin "a modest, almost apologetic one; the ideas it contains are the stuff of genius and the fabric of change, in it, he advocated that men need not be born only to die and that if they were frozen at or near

1410-477: The funeral services industry, making it easier than in the U.S. to get hospitals and morgues to release cryonics candidates. In 2016, the English High Court ruled in favor of a mother's right to seek cryopreservation of her terminally ill 14-year-old daughter, as the girl wanted, contrary to the father's wishes. The decision was made on the basis that the case represented a conventional dispute over

1457-473: The hope that resurrection may be possible in the future. Cryonics is regarded with skepticism by the mainstream scientific community. It is generally viewed as a pseudoscience , and its practice has been characterized as quackery . Cryonics procedures can begin only after the "patients" are clinically and legally dead . Procedures may begin within minutes of death, and use cryoprotectants to try to prevent ice formation during cryopreservation. It

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1504-432: The kidney was successfully transplanted into a rabbit, with complete functionality and viability, able to sustain the rabbit indefinitely as the sole functioning kidney. Cryoprotectants operate by increasing the solute concentration in cells. However, in order to be biologically viable they must easily penetrate and must not be toxic to cells. Some cryoprotectants function by lowering the glass transition temperature of

1551-424: The late 1990s, cryobiologists Gregory Fahy and Brian Wowk developed the first cryoprotectant solutions that could vitrify at very slow cooling rates while still allowing whole organ survival, for the purpose of banking transplantable organs. This has allowed animal brains to be vitrified, thawed, and examined for ice damage using light and electron microscopy . No ice crystal damage was found; cellular damage

1598-536: The point where they've 'died' during vitrification because the subjects are now inside liquid nitrogen canisters." Based on experience with organ transplants, biochemist Ken Storey argues that "even if you only wanted to preserve the brain, it has dozens of different areas which would need to be cryopreserved using different protocols". Revival would require repairing damage from lack of oxygen, cryoprotectant toxicity, thermal stress (fracturing), and freezing in tissues that do not successfully vitrify, followed by reversing

1645-470: The procedure. Some customers opt to have only their brain cryopreserved ("neuropreservation"), rather than their whole body. As of 2014, about 250 corpses have been cryogenically preserved in the U.S., and around 1,500 people have signed up to have their remains preserved. As of 2016, there are four facilities that retain cryopreserved bodies, three in the U.S. and one in Russia. A more recent development

1692-510: The prospect of immortality, and the benefits associated with avoiding death. Shaw explores the expense and the potential payoff, and applies an adapted version of Pascal's Wager to the question. In 2016, Charles Tandy wrote in support of cryonics, arguing that honoring someone's last wishes is seen as a benevolent duty in American and many other cultures. Cryopreservation was applied to human cells beginning in 1954 with frozen sperm, which

1739-493: The recommendations of Isaac Asimov and Fred Pohl , and received more publicity. Ettinger also stayed with the movement longer. Nevertheless, the cryonics historian R. Michael Perry has written: “Evan Cooper deserves the principal credit for forming an organized cryonics movement.” Cryonics Cryonics (from Greek : κρύος kryos , meaning "cold") is the low-temperature freezing (usually at −196 °C or −320.8 °F or 77.1 K) and storage of human remains in

1786-1146: The respondents were familiar with cryonics, and about half of those familiar with it had learned of it from films or television. The town of Nederland, Colorado , hosts an annual Frozen Dead Guy Days festival to commemorate a substandard attempt at cryopreservation . Corpses subjected to the cryonics process include those of baseball players Ted Williams and his son John Henry Williams (in 2002 and 2004, respectively), engineer and doctor L. Stephen Coles (in 2014), economist and entrepreneur Phil Salin , and software engineer Hal Finney (in 2014). People known to have arranged for cryonics upon death include PayPal founders Luke Nosek and Peter Thiel , Oxford transhumanists Nick Bostrom and Anders Sandberg , and transhumanist philosopher David Pearce . Larry King once arranged for cryonics but, according to Inside Edition , changed his mind. Sex offender and financier Jeffrey Epstein wanted to have his head and penis frozen after death. The corpses of some are mistakenly believed to have undergone cryonics. The urban legend that Walt Disney 's remains were cryopreserved

1833-486: The revival of the cryopreserved person. Cryopreservation is accomplished by freezing with or without cryoprotectant to reduce ice damage, or by vitrification to avoid ice damage. Even using the best methods, cryopreservation of whole bodies or brains is very damaging and irreversible with current technology. Cryonicists call the human remains packed into low-temperature vats "patients". They hope that some kind of presently nonexistent nanotechnology will be able to bring

1880-498: The subtleties of a human mind are contained in its anatomical structure, few will comment directly on cryonics due to its speculative nature. People who intend to be frozen are often "looked at as a bunch of kooks". Cryobiologist Kenneth B. Storey said in 2004 that cryonics is impossible and will never be possible, as cryonics proponents are proposing to "overturn the laws of physics, chemistry, and molecular science". Neurobiologist Michael Hendricks has said, "Reanimation or simulation

1927-524: The supposed benefits offered; historically, even the most robust corporations have only a one-in-a-thousand chance of lasting 100 years. Many cryonics companies have failed; as of 2018 , all but one of the pre-1973 batch had gone out of business, and their stored corpses have been defrosted and disposed of. Medical laboratories have long used cryopreservation to maintain animal cells, human embryos, and even some organized tissues, for periods as long as three decades. But recovering large animals and organs from

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1974-539: The thawed-out freezee from making new friends", and that a lonely existence may be preferable to none at all. Suspended animation is a popular subject in science fiction and fantasy settings. It is often the means by which a character is transported into the future. The characters Philip J. Fry in Futurama and Khan Noonien Singh in Star Trek exemplify this trope. A survey in Germany found that about half of

2021-435: The time of death they might yet have a chance to live again, whole and complete, forever." In the same year, but shortly after Cooper's book appeared, a Michigan college physics teacher, Robert Ettinger , privately published his book The Prospect of Immortality , that independently suggested the same idea. Ettinger came to be credited as the originator of cryonics, perhaps because his book was republished by Doubleday in 1964 on

2068-538: Was due to dehydration and toxicity of the cryoprotectant solutions. Costs can include payment for medical personnel to be on call for death, vitrification, transportation in dry ice to a preservation facility, and payment into a trust fund intended to cover indefinite storage in liquid nitrogen and future revival costs. As of 2011, U.S. cryopreservation costs can range from $ 28,000 to $ 200,000, and are often financed via life insurance. KrioRus , which stores bodies communally in large dewars , charges $ 12,000 to $ 36,000 for

2115-628: Was recognized for developing a method of preserving brains with chemicals rather than by freezing. The method is fatal, performed as euthanasia under general anesthesia, but the hope is that future technology will allow the brain to be physically scanned into a computer simulation, neuron by neuron. According to The New York Times , cryonicists are predominantly non-religious white men, outnumbering women by about three to one. According to The Guardian , as of 2008, while most cryonicists used to be young, male, and "geeky", recent demographics have shifted slightly toward whole families. In 2015, Du Hong,

2162-438: Was soon thawed and buried by relatives. The first body to be cryopreserved and then frozen in hope of future revival was that of James Bedford . Alcor 's Mike Darwin says Bedford's body was cryopreserved around two hours after his death by cardiorespiratory arrest (secondary to metastasized kidney cancer) on January 12, 1967. Bedford's corpse is the only one frozen before 1974 still preserved today. In 1976, Ettinger founded

2209-465: Was thawed and used to inseminate three women. The freezing of humans was first scientifically proposed by Michigan professor Robert Ettinger in The Prospect of Immortality (1962). In 1966, the first human body was frozen—though it had been embalmed for two months—by being placed in liquid nitrogen and stored at just above freezing. The middle-aged woman from Los Angeles, whose name is unknown,

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