As Prof mentioned in class, many people who get organ transplants often “inherit” characteristics of the donor. When this was brought up in our last class, it seemed to be quickly dismissed as coincidence or learning about the donor through the surgeon, neighbor, etc. However, this idea intrigued me, so I did a bit of research. The first thing I found was an article written by Paul Pearsall, PhD, Gary E. Shwartz, PhD, and Linda E. Russek, PhD that examined this phenomena, different narratives, and one mechanistic explanation for it.
Some of these case studies include a man who received a transplant from a woman and afterward began to love the smell of feminine perfume and the color pink, both of which he disliked before, a sixteen month boy who called his donor’s parents (whom he had never met before) “Mama” and “Daddy”, singling the father out of a crowd, a man who formerly hated classical music but grew to love it after receiving a transplant from a devout classical music fan, and a man who formerly loved meat but hated it after receiving a transplant from a health store manager and vegetarian woman.
Over the past ten years, Pearsall has had 74 transplant patients who claimed this phenomena happened to them. Of course, there are many factors to take into account, such as normal personality changes/truth in anecdotal evidence, but the fact that so many people have claimed to have this happened means that the phenomena does deserve some attention.
Past mechanistic explanations for this phenomena have included effects of immunosuppressant drugs, psychosocial drugs, and pre-existing pathopsychology of the patients. This article, however, identified a new mexhanistic explanation for this phenomena. This explanation is called “living systems theory”, which posits that “all living cells possess “memory” and “decider” functional subsystems within them”. The recent integration of systems theory with the concept of dynamical energy systems theory allows us to hypothesize that all dynamical systems (i.e. from cells –> tissues –> organs) store information and energy to various degrees. Thus, all cells have “memory” through feedback loops. As stated in the article, “The systemic memory mechanism has been applied to a variety of controversial and seemingly anomalous observations in complementary and alternative medicine, including homoeopathy. It also makes new predictions. One prediction is that sensitive recipients of transplanted organs can experience aspects of the donor’s personal history stored in the transplanted tissues”.
Now obviously this isn’t a complete explanation. Even if cells had feedback loops and memories, this does not explain how someone could share real, tangible memories with their donor, but it could explain instances of, for example, a meat eater no longer being able to eat meat. I believe a complete mechanistic explanation will need to incorporate the DNA of the donor being placed into the recipient, especially if it holds true that memories can be passed on through DNA.
A vitalistic explanation of this phenomena could be that the recipient is receiving a piece of the soul of the person who gave them their organ. If soul and mind are connected, then soul and personality could be as well, and this would explain why part of the personality is passed on. I, however, do not believe this is the case, as I believe if there is such thing as a soul, it is completely intertwined with the mind of the person, and thus when the mind/consciousness dies, the soul moves on instead of lingering with remaining living cells.
What do you all think about these different ways of explaining the phenomena? Do you believe the phenomena is real at all?
-Elise