The Waiting List vs. The Printer: A Future Without Organ Shortages?

Eight thousand and ninety-six. That’s not just an ordinary number. It’s the number of people in the UK waiting for a life-saving organ transplant.1 Last year, only 4,853 received their vital organ transplant. [1] Pause and read that again. More than three thousand people are still waiting. 3,243 to be precise. Still hoping. Still holding on for the call that, for too many, never comes. Every day, someone on that list takes their last breath—not because an organ transplant wasn't possible, but because there weren't enough organs from donors. But what if this crisis could be ended? That is the power of 3D bioprinting of organs.

You may be wondering what that is, and no, it isn’t from the science fiction movie you watched over the weekend. It’s a real-life possibility that researchers are invested into. So how does this life-saving innovation work? Think of a printer using ink to create a 2-dimensional picture. Now replace the ink with living cells that have the same genetic and biochemical makeup as all your other living cells. Instead of printing a picture on paper, it builds tissues: groups of similar cells that work together to perform a specific function. That is how 3D bioprinting works. Scientists design the organ using computer-aided design, then the printer makes numerous tissues until a fully functional organ is made. [2] This innovative technology could save thousands of lives. Imagine no more waiting for a call that never comes; no more waiting lists.

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As a result, in 2023 a hospital in South Korea moved to implement this revolutionary technology to help to save the life of a patient. At Seoul St. Mary’s Hospital, in the capital of South Korea, a female in her 50s had lost part of her windpipe, also known as trachea, after having a surgery having suffered from thyroid cancer. The trachea helps transport air in and out of our lungs during breathing, connecting the larynx to the lungs, so a continuous windpipe is essential for bodily functions and survival. The doctors at this record breaking hospital became the first to perform a 3D-printed trachea transplant. Made of cartilage and mucosal lining, lining found in many organs like the lungs and nose which has a primary purpose of fighting pathogens, the 3D bioprinted organ was a life-saver in this woman’s case. These elements were made from nasal stem cells and cartilage cells discarded during nasal congestion and nasal septum procedures. [4]

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So why has this innovative, life-saving, vital technology not been implemented worldwide? Why hasn't this technology overtaken normal organ transplants? Well it’s simple, like many other new technologies, there are many ethical, legal and regulatory concerns to 3D bioprinting of organs which to many outweigh benefits. 3D bioprinting often tries to make use of stem cells and there are many concerns about this due to the moral status of stem cells. Totipotent stem cells, capable of dividing and differentiating into any specialized cells, could become humans so many humans are opposing the use of stem cells. Moreover, the use of stem cells is heavily regulated and even banned in some countries. Also many people are concerned with using human tissues to print the 3D organs especially because technology is being used alongside it in the form of computer aided design. Finally, since this technology has only been newly discovered there is a lack of regulatory boards overseeing the bioprinting so not only patients but also governments are apprehensive to approve its use.

Even though these concerns of 3D bioprinting exist, there are numerous advantages and uses of this invention which lead people to believe it will only be a matter of time before we see a worldwide rollout of this innovation. First and foremost, as previously stated the waiting list for organ transplants are endless not only in the UK but other parts of the world, so the 3D bioprinting puts an end to this problem as patients don’t need to wait for suitable organs from donors. Not only this, but 3D bioprinting will give us a new and improved aspect to cell modelling. It will play a crucial part in helping us model diseases, like Covid-19, helping us to understand the mechanism of the disease. Furthermore it will be pivotal to drug testing since the 3D bioprinted organs can be administered to see if a drug achieves its purpose without any major side-effects.

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All in all, while 3D bioprinting offers priceless benefits, its current concerns have ceased its growth. However these concerns are not permanent. Rather they are hurdles—and hurdles are meant to be cleared. It’s inevitable that 3D bioprinting becomes a modern-day reality.

References

1.Organ transplant waiting list hits record high as donor and transplant numbers fall [Internet]. NHS Organ Donation. 2025. Available from: https://www.organdonation.nhs.uk/news/organ-transplant-waiting-list-hits-record-high-as-donor-and-transplant-numbers-fall/

2.Ricci G, Gibelli F, Sirignano A. Three-Dimensional Bioprinting of Human Organs and Tissues: Bioethical and Medico-Legal Implications Examined through a Scoping Review. Bioengineering [Internet]. 2023 Sep 1;10(9):1052. Available from:https://www.mdpi.com/2306-5354/10/9/1052

3.YASA Design Studio. A 3D image of a red fish in a cage [Internet]. Unsplash.com. Unsplash; 2024 [cited 2026 Mar 21]. Available from: https://unsplash.com/photos/a-3d-image-of-a-red-fish-in-a-cage-0Ix64K38kIQ

4.1.Leach N. Woman given a new 3D-printed windpipe in a world-first [Internet]. www.sciencefocus.com. 2024. Available from: https://www.sciencefocus.com/news/breakthrough-3d-printed-organ-windpipe

5.1.Search media - Wikimedia Commons [Internet]. Wikimedia.org. 2026 [cited 2026 Mar 21]. Available from: https://commons.wikimedia.org/w/index.php?search=lung+diagram+labelled&title=Special%3AMediaSearch&type=image

6.Soul AC. Pipette adding liquid to colorful petri dish cultures. [Internet]. Unsplash.com. Unsplash; 2026 [cited 2026 Mar 21]. Available from: https://unsplash.com/photos/pipette-adding-liquid-to-colorful-petri-dish-cultures-HY1D0eKss5o