The idea of head transplant is a human head onto a healthy body has long been relegated to the realm of science fiction. However, Italian neurosurgeon Sergio Canavero has made headlines with his controversial claim that such a procedure, known as HEAVEN (Head Anastomosis VENosis), is not only possible but imminent.
Canavero’s proposal has garnered significant criticism from the medical community. Bioethicist Paul Root Wolpe of Emory University argues that HEAVEN walks a “fine line between medical care and murder.” Many experts doubt the feasibility of connecting two separate nervous systems, a feat Canavero himself describes as requiring “an army of surgeons.”
Head Transplant setbacks and Shifting Sands
Canavero’s initial plan was to perform the surgery on Valery Spiridonov, a Russian computer scientist suffering from a debilitating muscle-wasting disease. However, legal hurdles in the US and a fortunate turn of events for Spiridonov himself – his condition stabilized, and he found love and got married—forced Canavero to look elsewhere.
China Calling
Undeterred, Canavero relocated to China and partnered with surgeon Dr. Xiaoping Ren. In 2017, they claimed a successful head transplant on cadavers, a procedure Canavero sees as a stepping stone to a live human transplant.
Technical Hurdles Remain
Despite Canavero’s optimism, significant challenges remain. Dr. Rohin Francis highlights the lack of technology to connect complex neural structures. He terms the proposed spinal cord connection method, a special “glue,” as “magical thinking.”
Is There Light at the End of the Tunnel?
While skepticism prevails, there are glimmers of hope. Researchers like William Sikkema at Rice University are developing graphene nanoribbons that could potentially aid in spinal cord fusion.
A Grisly Past: Experiments on Animals
The concept of head transplants has a dark past. In the 1950s, Russian scientist Vladimir Demikhov conducted gruesome experiments where he grafted living heads onto dogs, resulting in two-headed animals that survived for a short period.
Ethical Concerns and Questions of Consciousness
Even if the technical hurdles are overcome, profound ethical questions remain. Would a transplanted head retain the consciousness and memories of the original body? What would the legal and social ramifications of such a procedure be?
The Road Ahead
Canavero remains steadfast in his belief that head transplants are on the horizon. Whether this controversial surgery will become a reality or remain science fiction is a question only time will answer.
