During his visit to Beijing in September 2025, Russian President Vladimir Putin told Chinese leader Xi Jinping that undergoing multiple organ transplants could potentially make a person “younger” and extend life to 150 years—a claim widely regarded as science fiction.
Interestingly, this statement came just days after scientists discovered a molecular “switch” that can reduce one of the most common complications in liver transplants, improving the longevity of donated organs.
Transplants and the Elusive Quest for Youth
The discovery underscores both the potential and the limitations of transplant medicine. Advances in organ replacement save lives, but using transplants to slow aging remains pure fantasy.
The idea of replacing body parts to regain youth is hardly new. In the early 1900s, wealthy men briefly embraced “monkey gland” transplants—grafts of monkey testicles—believing they could restore vitality.
A hundred years later, tech entrepreneur and self-proclaimed biohacker Bryan Johnson has revived the pursuit of longevity through blood-based therapies. These include platelet-rich plasma injections to promote healing and transfusions of “young blood” to slow ageing.
Mice, Misguided Hopes, and “Young Blood”
The concept originates from parabiosis studies in mice, where the blood circulation of young and old animals was surgically connected. These experiments showed that older mice experienced temporary improvements in muscle strength, tissue repair, and cognitive performance. However, these findings have not been replicated in humans.
Clinical trials involving plasma from young donors have failed to demonstrate significant anti-aging effects, and the practice has raised ethical concerns. In 2019, the US Food and Drug Administration issued a warning against commercial “young blood” transfusions, labeling them as “unproven and potentially harmful.” Nonetheless, the allure remains: the idea that youth could be extracted, packaged, and sold to those who can afford it.
Transplants can Preserve Life, but they Cannot Start it over
Today, authorized organ and tissue transplants are performed to save lives when a critical organ fails. Donor organs are meticulously matched to recipients according to tissue compatibility and undergo thorough screening for diseases, tumors, and viruses to maximize the likelihood of long-term survival. Despite this, the procedure still involves significant risks.
Katie Mitchell, the UK’s longest-surviving heart-and-lung transplant recipient, demonstrates that long-term success depends on continuous care and resilience. The body’s immune system naturally identifies transplanted organs as foreign and, without strong immunosuppressive medication, would reject them within weeks.
The Hidden Costs of Transplants: Immunity, Aging, and Chronic Risk
These drugs protect the new organ but raise the risk of infections and some cancers. Over time, even a subdued immune response can trigger ongoing inflammation and tissue scarring, ultimately causing chronic rejection. Advanced medications cannot always stop this process, and lifelong treatment significantly impacts the patient’s overall health.
Age further complicates recovery. Older patients’ weaker immunity, slower tissue repair, and higher inflammation make surgery recovery harder and increase rejection risk. Research shows survival rates fall sharply in older adults after repeat or multi-organ transplants due to aging tissues’ limited recovery.
It’s evident that while transplants can prolong life, they cannot start it over. The physical strain of surgery and the demands of immunosuppressive therapy make “upgrading” the human body far from simple.
The Shortage of Organs, Ethical Dilemmas, and the Illicit Organ Trade
Transplantable organs are in short supply. Nearly every country has a lengthy waiting list for donor organs, as the demand greatly surpasses the available supply. This shortage drives a risky black market, where trafficked organs are taken from vulnerable people in poorer areas and sold illegally to wealthier recipients.
The shortage of donor organs not only results in loss of life but also influences the ethical considerations surrounding medical innovation. To address this gap, researchers have investigated xenotransplantation—the transfer of animal organs, typically from pigs or baboons due to their anatomical resemblance, into humans. Although conceptually promising, these transplants often encounter extreme immune rejection, causing most organs to fail within a matter of days or weeks.
Lab-Grown Organs: Promise, Limits, and Ethical Dilemmas
Cloned or lab-grown organs represent an emerging avenue in medicine. Scientists can now grow small-scale organoids—simplified versions of human organs—but producing full-size, fully functional organs suitable for transplantation is still beyond current capabilities.
This limited availability raises complex ethical questions. If a healthy, tissue-matched organ were accessible, who should receive it: a child or an elderly patient? Allocating a rare donor organ to someone whose organ is still functioning, even if less efficiently, would be difficult to justify.
These ethical challenges are central to medical decision-making. Transplant medicine prioritizes patients who will gain the most life expectancy and quality of life. Using scarce organs for elective procedures aimed at slowing aging would violate this principle and could erode public confidence in the transplant system.
Moreover, some organs cannot be replaced at all. The brain, which shapes consciousness and personal identity, is particularly vulnerable. It undergoes age-related changes such as memory loss, inflammation, and degenerative diseases, making it uniquely irreplaceable.
Unlike the heart or kidneys, the brain cannot be replaced or restored. Even if future science allows us to regenerate or transplant every other organ, the brain’s intricacy and its central role in shaping identity make true immortality unattainable.
The pursuit of eternal youth through organ replacement is not the next step in medicine. Instead, it reflects our resistance to accepting that aging is not a flaw to be corrected, but an essential aspect of the human experience.
Read the original article on: Sciencealert
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