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It appears to be a scene straight out of a sci-fi movie, but scientists claim that they have the technological know-how to carry out a head transplant. But with the ethical issues involved in it and a price tag of $10 million, will there be any takers?

Canavero has opined that his head transplant surgery would be a boon for patients suffering from paraplegia (with enough length of functional spinal cord to accept a head transplant). Other patients who can benefit from this surgery are patients living with quadriplegia and multiple organ failure, or those patients who have intractable cancer that is spreading to almost all parts of the body but sparing the brain. Patients with muscular dystrophy have also been mentioned to be likely beneficiaries of a future head transplant surgery.

However, Dr Canavero has stressed that the first patient to undergo a head transplant surgery would be a young person whose brain and mind are intact, even when his or her whole body is ravaged by a serious illness. However, the nature of illness would not be progressive muscular dystrophy or genetic and metabolic diseases that generally affect young people.

The first successful head transplant was done way back in 1970?

If you're still incredibly skeptical and believe that a head transplant will never become a common procedure, you're not alone. However, this study is far from the only one to dive into the exciting possibility, which could save lives, greatly improve lives, and prolong lives if it were to become a reality.

Robert White has been credited for carrying out the first successful head transplant surgery way back in 1970. He, along with his colleagues, carried out a head transplant on a rhesus monkey. Although his team was successful in establishing an anastomosis between the major blood vessels (cephalo-somatic linkage), they were unable to join the spinal cord stumps.

As a result, the monkey remained paralyzed from the neck down from the time of the operation to the time of its death eight days after the surgery. Not exactly a success story, then, but still an impressive scientific feat. However, in 1999, Robert White predicted that a fully functional head transplant surgery would become a clinical reality by the end of early 21st century.

Recently, scientists working on rats, at the Cleveland Clinic and the Case Western Reserve University, were successful in restoring limited connectivity between two surgically separated parts of spinal cord. They achieved this feat by encouraging the body’s endogenous healing mechanisms which continue to be effective even in severed portions of spinal cord.

Another research, carried out on dogs, established functional connectivity between the axons of two severed parts of spinal cord, using polyethylene glycol.

The feasibility of Canavero’s experiment has been questioned by other scientists

Other scientists have laughed off Canavero’s claim stating them as just figment of fantasy. They say that it is simply not possible to reconnect severed parts of axons using glue. They have termed the whole experiment as “bad science.”

Apart from the feasibility of the procedure, Canavero’s experiment raises a multitude of bio-ethical issues. To sever a patient’s head, even if he is brain dead or suffering from multiple organ failure sounds heinous. Then, there is a question of identity that is involved. The patient with a head transplant may face identity issues. Whether he would be recognized by the identity of the head or that of the body? What would the surgery be called- a head transplant or a body transplant? Technically, the identity of a person is because of his head. But then, if such a person has a child, who would be the child’s parent- the body or the brain? The mere fact that he has termed his experiment as HEAVEN has already created a storm.

Another important point to be considered besides the ethical issues is the price tag on the surgery. According to Canavero, the procedure would cost around $10 million. Now, is the surgery worth it? Is your life worth $ 10 million?

Considering all these facts, there are very few people who would place their money on a head transplant. What is your opinion?

  • “HEAVEN: The head anastomosis venture Project outline for the first human head transplantation with spinal linkage (GEMINI),” by Sergio Canavero, published in the journal Surgical Neurology International in 2013, accessed on August 12, 2013
  • “First-ever human head transplant is now possible, says neuroscientist,” by Christopher Mims, published on July 1, 2013, accessed on August 12, 2013
  • “How to Perform a Head Transplant,” by James Hamblin, published on July 5, 2013 on the site theatlantic.com, accessed on August 12, 2013.
  • Photo courtesy of ellajphillips by Flickr : www.flickr.com/photos/create_joy/3273848018/
  • Photo courtesy of Simon Fraser University by Flickr : www.flickr.com/photos/sfupamr/4999234611/