1.- “The cryonics patients are frozen”.
The process of cryonics or cryopreservation is something totally different from “direct freezing,” such as putting something in the home freezer. The main difference is a process called vitrification, where more than 60% of the water inside the cells is replaced with protective chemicals that prevent freezing and the formation of ice crystals, even at cryonic temperatures (approximately -124 ° C). The goal of cryonics or cryopreservation is to reduce molecular movement to a practical dead point, effectively preserving cells and tissues indefinitely, in their original state.
The main problem with “direct freezing” is the associated damage, since the formation of ice crystals could damage the tissues, especially the most sensitive of the brain and nervous system. The vitrification tries to avoid freezing during deep cooling. It has been shown that vitrification, combined with a carefully controlled cooling sequence, significantly reduces and even eliminates the structural damage that would occur with a direct freezing process. Scientists have reversibly vitrified, among other biological systems, the blood vessels and even a whole kidney has been recovered and transplanted.
3.- “Cryonics is the belief that dead people can be revived”
Absolutely NOT. People who have been dead for a long time and whose tissues have been destroyed can not be “miraculously” brought back to life. A cryonics patient is someone who has been cared for and applied very specialized medical procedures, immediately after the heartbeat has stopped, which is the current definition of clinical death.
Throughout the history of medicine, death has been more or less defined as a state in which the medical technology of the moment, could no longer help the patient. In many cases, patients today are resuscitated successfully, from states that we consider “critical” but not “dead”, and that in the past were irretrievably intractable. For example, an person’s heart can now start beating again with a defibrillator. People who are unconscious and have stopped breathing can recover by accurately diagnosing their condition and apply techniques and equipment to rectify it. There are also blood transfusions, organ transplants, corrective surgery and countless other procedures that were unimaginable just 100 years ago.
It seems logical to think that within 100 years or more, from now on, medical professionals will have access to techniques and equipment that we can not even dream about today.
“Time” is the key to cryonics, since our goal is to preserve the person in the early stages of the death process, while there is still time to reverse their condition. Cryonics patients are considered “dead” only because of the inability of current medicine to help them. Therefore, the goal is to preserve that patient in the most perfect state possible so that future doctors can cure him.
Therefore, a cryonics patient is exactly that: “a patient” who suffers a critical situation and who needs immediate medical attention to save himself. Time is the only difference between a cryonic patient, who waits indefinitely to be seen by future doctors, and a person admitted to the emergency room for a terminal condition at present.
5.- “Renowned scientists and doctors do not support cryonics.”.
Many renowned scientists and doctors support cryonics, and many do not. However, the lack of active and public support for cryonics is not the same as rejecting the theory. Many scientists simply do not devote the time and energy necessary to investigate the subject in sufficient detail to form a solid opinion, much less to make public announcements endorsing or questioning the theory.
As in any theory, there will be credible and respected advocates for and against. However, in the case of cryonics, there is also some hesitation on the part of some scientists, especially cryobiologists, to publicly endorse the issue, in part because of the sensationalist reports on cryonics that occurred in the past. Another added fear is that cryonics reports eclipse their most common goals and objectives, such as organ preservation and reproductive biology.
It is also worth noting that there are many misinformed scientists on the subject and reject the theory without taking the time to investigate the scientific arguments in order to make a precise and informed judgment. Scientists often focus on very specific fields of study, and cryonics can be difficult to evaluate from the limited point of view of a single discipline.
As an example of scientists and researchers who have publicly supported cryonics, you can consult the Open Letter signed by more than 60 prominent scientists in fields including physics, physiology, neural cryobiology, etc. (Link to the Letter)
6.- “La criónica se utiliza para preservar “Cabezas Congeladas”.
En la actualidad, hay algún centro que ofrece lo que se conoce como la opción “Neuro” o suspensiones exclusivas para la cabeza. El argumento es que el cerebro es el único órgano verdaderamente crítico para la preservación, ya que es la fuente de la memoria y la identidad de una persona. Siguiendo este razonamiento, se supone que una vitrificación sólo de la cabeza puede realizarse más rápidamente y almacenarse a largo plazo en nitrógeno líquido con más eficiencia.
Sin embargo, hay centros que no ven la ventaja en éste sistema y realizan la criopreservación sólo de la persona completa.
7.- “Cryonics is only for the super rich.”
The reality is that the current price offer is very variable, and there are affordable prices for people of different economic levels, being possible the financing through an insurance policy.
9.- Cryonics comes into conflict with religion.
The associations and other cryonics organizations have members of many religions throughout the world.
Cryonics is simply another medical procedure that saves lives, and is consistent with religious principles. The goal of cryonics is not to “restore life to the dead” but to preserve people in what we consider a critical condition until medical technology can cure them. It could be considered that patients in this state are in a deep coma, a condition that is considered to be reversible thanks to scientific and technological progress.
2.- “Cryonics is freezing dead people”
It is about preserving patients until Science can reanimate them, using what we predict will be a combination of advanced medical procedures and nanotechnology. The key lies in the definition of clinical death. Death is a process, not an instantaneous phenomenon. Even after conventional medicine diagnoses as “death” (the heartbeat stops), the normal processes of life continue in the brain, cells and tissues of a body. These cells and tissues stop working slowly and finally begin the process of decomposition due to the lack of oxygenated blood from the heart. Cryonics seeks to stop this process immediately after the heart stops beating to maintain and preserve these still viable cells, tissues and organs, particularly the brain (which many scientists consider to be the key to a person’s individuality), with the goal of being able to restore full functionality in the future.
In the cryopreservation process, a medical life support team is used to continue blood circulation and oxygenate the lungs, in order to maintain the viability of the tissues and organs during the initial phase of the process. This initial phase (or “stabilization”) is very similar to standard emergency procedures in the face of cardiac arrest, including assisted breathing equipment and cardiac compression equipment. The person is not treated as a “dead person”, but as a patient who is in the early stages of the death process, and who can stabilize indefinitely and finally reanimate.
Death is a process that is not inevitable or irreversible if it can be stopped in time and the patient stabilizes at cryonic temperatures until Science can reanimate them.
hasta que la Ciencia pueda reanimarlos.
4.- “Experts say that cryonics can not work”.
The argument most used against cryonics is made by reversing the burden of proof, that is, “it can not work because no patient has yet been successfully resuscitated”. It is true that there is currently no technology to revive patients, but that does not mean that science will not be able to overcome the limitations of current understanding and technology.
There are very few people with the necessary experience in a wide range of disciplines to adequately evaluate the viability of cryonics. For example, very few scientists know what vitrification is. Fewer still know that vitrification can preserve the cellular structure of whole organs or whole brains. The average doctor knows little or nothing about the scientific basis of cryonics. The so-called “experts” have no way of predicting the technology available in the coming years, and time and time again they have underestimated the foreseeable advances in Science and Technology. The leading “experts” of their time predicted that the widespread use of computers would never happen.
Until it is shown that a theory is an irrefutable fact, there will be advocates for and against any argument. Many respected scientists and cryobiologists agree with the theory, and many do not. However, no one has unquestionably proven that the theory will not work, therefore, despite claims to the contrary, the viability of cryonics remains an open debate and not a settled issue.
6.- “Cryonics is used to preserve" Frozen Heads ”.
Currently, there is a center that offers what is known as the “Neuro” option or exclusive suspensions for the head. The argument is that the brain is the only truly critical organ for preservation, since it is the source of a person’s memory and identity. Following this reasoning, it is assumed that a vitrification of only the head can be performed more quickly and stored in liquid nitrogen in the long term with more efficiency.
However, there are centers that do not see the advantage in this system and perform the cryopreservation only of the whole person.
8.- The great difference in prices between some entities and others is due to the difference in quality.
Not necessarily. The price diversity in some cases, is due to the type of organizational structure of the Entity, without detriment to quality. In other cases, the difference is due to the different services they offer.
10.- Cryonics is a scam.
The most important organizations of cryonics are not for profit and, as such, their books are open to public scrutiny. They are entities directed by and for their own members. Much of the work is carried out by experts on a voluntary basis. They do not earn money with cryonics because it is not their goal, since what they want is to improve the chances of resuscitation for them and their families.
On the other hand, there are also private for-profit organizations that offer cryopreservation services, and as in any contract, the suitability of the contract must be verified.