Living organ donation is more common and more varied than most people realize. Kidneys are by far the most frequently donated organ from a living person, but you can also donate a portion of your liver, a lobe of a lung, and in rare circumstances, part of your pancreas or small intestine. Beyond solid organs, living donors routinely give bone marrow, blood stem cells, skin grafts, and blood products. A newer and still-evolving procedure even allows donation of a uterus. Each type of living donation carries a different risk profile, a different recovery timeline, and different long-term consequences for the donor, and the details matter more than the simple list.
Kidneys Are the Gold Standard of Living Donation
The kidney is the organ most commonly donated by living people, and the practice has been around since the 1950s. Because you have two kidneys but can live a healthy life with one, the logic is straightforward. Living-donor kidney transplants also tend to outperform kidneys from deceased donors. A long-term study from Johannesburg covering nearly 1,700 patients over 48 years found that recipients of living-donor kidneys had roughly half the risk of graft failure and death compared to those who received deceased-donor kidneys.1PubMed Central. The impact of deceased versus living donor graft status on kidney transplant outcomes: A Johannesburg single-center 48 years experience of 1685 patients Another study found that three-year patient and graft survival rates were significantly better with living donors, even after adjusting for factors like age, sex, and diabetes.2PubMed Central. Does Kidney Transplantation With Deceased or Living Donor Affect Graft Survival?
A reasonable question is what happens to the donor’s remaining kidney. The body compensates surprisingly well. After one kidney is removed, the remaining kidney experiences an initial drop in filtration rate, but within the first year it grows larger and picks up much of the slack. A longitudinal study using detailed imaging showed that single-kidney filtration rose from about 47 ml/min before donation to roughly 64-66 ml/min in the months and years afterward, with the kidney’s cortical volume increasing by about a third.3JCI Insight. Longitudinal study of living kidney donor glomerular dynamics after nephrectomy Another study confirmed that the difference in kidney function between the first day after surgery and one year later was not significant, meaning the remaining kidney stabilizes quickly.4PubMed Central. How Does the Remaining Single Kidney Cope After Contralateral Nephrectomy of the Kidney Donor? A Single-Center Cohort Study
That said, living kidney donors do face a small, real increase in the risk of developing kidney disease down the road. For most donors, the 15-year risk of kidney failure is under 1%, but certain populations face higher risk, particularly young Black men.5PubMed Central. Risks of Living Kidney Donation: Current State of Knowledge on Outcomes Important to Donors A large study that followed donors over many years found that their overall survival was similar to matched controls in the general population, and that the rate of end-stage kidney disease among donors was actually lower than in the general population, though this likely reflects the fact that donors are screened to be healthier than average before they are approved.6PubMed Central. Long-Term Consequences of Kidney Donation
Living Liver Donation
The liver’s ability to regenerate makes it the second most common organ donated by a living person. In a living-donor liver transplant, a surgeon removes a portion of the donor’s liver, usually the right lobe for adult recipients or the left lobe or left lateral segment for children. Both the donor’s remnant and the transplanted segment then regrow.
The regeneration is remarkable but not instant. A study of over 200 living liver donors found that donor remnants grew substantially, averaging about 676 cc of new tissue by three months after surgery. However, only about 6% of donors had fully regained their original total liver volume by that point. Most donors reached roughly 80% of their starting liver volume at three months.7PubMed Central. Liver regeneration after living donor transplant Full regeneration typically continues beyond that window.
Living liver donation is a bigger operation than kidney donation and carries higher surgical risk. A large retrospective study found an overall complication rate of about 22% among liver donors, though most of those were minor. Serious complications occurred in roughly 4% of donors, and those rates were comparable whether the surgeon removed the right lobe, left lobe, or left lateral segment.8PubMed. Right lobe donor hepatectomy: is it safe? A retrospective study The risk of donor death, while very low, is not zero and is estimated at around 0.1-0.5% depending on the center and which portion of the liver is removed.
Living Lung Donation
Living-donor lung transplantation is one of the rarest forms of living donation, performed at only a handful of specialized centers worldwide. The procedure typically requires two living donors, each giving one lower lobe, which are then transplanted into the recipient to replace both diseased lungs. Because of the need for two donors per recipient and the irreversibility of lobe removal, this type of donation is usually reserved for critically ill patients who cannot wait for a deceased-donor organ.
Donor outcomes have been encouraging at experienced centers. One program reported that all living lung donors returned to their previous social lives without major complications, with a surgical morbidity rate under 15%.9PubMed Central. Living-donor lobar lung transplantation A study tracking donor lung function after lobectomy found that forced vital capacity recovered to about 89% of the preoperative value within a year, and forced expiratory volume showed a similar pattern. Complications, when they occurred, were mostly things like fluid re-accumulation or prolonged air leakage rather than life-threatening events.10PubMed. Outcomes and pulmonary function in living lobar lung transplant donors Unlike the liver, a donated lung lobe does not grow back. Donors permanently lose some lung capacity, though for a healthy person with full baseline function, the loss is manageable.
Pancreas and Small Intestine
Living donation of a portion of the pancreas or small intestine is technically possible but exceptionally rare. The pancreas produces insulin, and removing part of it risks pushing the donor toward diabetes. A study following living pancreas donors over the long term found that about 15% developed diabetes requiring oral medication and another 11% developed insulin-dependent diabetes after donation. Donors who gained significant weight after surgery were at the highest risk.11PubMed. Long-term Outcomes for Living Pancreas Donors in the Modern Era
Because of these risks and because there is generally no severe shortage of deceased-donor pancreases in most countries, living pancreas donation is largely restricted to specific situations, such as a highly sensitized patient who has a cross-match-negative relative willing to donate.12PubMed. Living-donor pancreas and small-bowel transplantation Living small-bowel donation is even rarer and follows similar logic: it is feasible in experienced centers but reserved for cases where no other option exists.
Bone Marrow and Blood Stem Cells
Bone marrow and peripheral blood stem cell donation are the most common forms of living donation by sheer volume, though they are often discussed separately from solid organ transplants. Both involve donating the cells that can rebuild a recipient’s blood and immune system, typically for patients with leukemia, lymphoma, or other blood cancers.
The two methods have different recovery profiles. In a large randomized comparison, donors who gave peripheral blood stem cells (collected through a process similar to blood donation, after receiving medication to boost stem cell production) recovered in a median of about one week. Bone marrow donors, who undergo a procedure where marrow is drawn from the hip bones under anesthesia, took a median of about 2.3 weeks to recover. Bone marrow donors reported more skeletal pain, body symptoms, and fatigue in the first week, while peripheral blood stem cell donors experienced greater changes in certain blood counts.13PubMed Central. Recovery of Unrelated Donors of Peripheral Blood Stem Cells versus Bone Marrow: A Prespecified Analysis from the Phase III BMT CTN Protocol 0201 The body replenishes marrow and stem cells within weeks, so unlike solid organ donation, nothing is permanently lost.
Uterus Transplantation
Uterus transplantation from a living donor is one of the newest frontiers in the field. It allows women born without a uterus, or who have lost one, to carry a pregnancy. Unlike other transplanted organs, the uterus is intended to be temporary: it is removed after the recipient has delivered one or two children, so that lifelong immunosuppression is not needed.
As of the literature available, 59 living-donor uterus retrievals have been reported, performed through open, robotic, or laparoscopic surgical approaches. Twenty-nine live births from living-donor uterus transplants have been documented.14PubMed Central. Living-Donor Uterus Transplantation: A Clinical Review For the donor, the procedure is essentially a hysterectomy, which is a well-established surgery but not a trivial one. A Swedish follow-up of nine living uterus donors found the procedure to be overall safe at one year, though the small numbers make it hard to draw sweeping conclusions.15Transplantation. Live Donors of the Initial Observational Study of Uterus Transplantation—Psychological and Medical Follow-Up Until 1 Year After Surgery in the 9 Cases The field is still young, and early U.S. attempts had a steep learning curve, with three of the first five grafts failing due to vascular complications.16American Journal of Transplantation. Living Donor Uterus Transplantation: A Single Center’s Observations and Lessons Learned From Early Setbacks to Technical Success
How Surgeons Remove a Kidney From a Living Donor
If you are considering kidney donation specifically, the surgical approach is worth understanding because it directly affects your recovery. Most centers now use laparoscopic (minimally invasive) surgery rather than the traditional open approach. A randomized trial comparing the two found that laparoscopic donors used fewer painkillers on the day of surgery, reported less pain one month out, and returned to work sooner.17PubMed. Postoperative pain and convalescence in living kidney donors-laparoscopic versus open donor nephrectomy: a randomized study Another comparison found that laparoscopic donors started driving in about two weeks compared to six weeks for open surgery donors, and returned to work in about five weeks versus twelve.18Postgraduate Medical Journal. Living kidney donation: a comparison of laparoscopic and conventional open operations
A more recent trial that used enhanced recovery protocols for both groups still found that laparoscopic donors had shorter hospital stays (a median of two days versus four) and lower physical fatigue scores six weeks after surgery.19Urology. Enhanced Recovery Open vs Laparoscopic Left Donor Nephrectomy: A Randomized Controlled Trial The shift toward laparoscopic and even robotic-assisted techniques has been one of the biggest practical improvements in living donation, making it physically easier for donors to say yes.
Who Is Eligible to Be a Living Donor
Not everyone who wants to donate will be approved. The screening process for living kidney donation, the most studied example, is extensive and designed to protect the donor above all else. Guidelines across major transplant organizations agree on several points:
- Age: Most programs no longer set a strict upper age limit, and older donors can be safe candidates provided their kidney function and overall health are good. However, there is general consensus that minors under 18 should not donate kidneys due to concerns about decision-making capacity.20Nephron. Criteria for Living Donation from Marginal Donors: One, No One, and One Hundred Thousand – Section: The Marginal LD
- Blood pressure: Hypertension controlled with one or two medications is generally acceptable, but uncontrolled hypertension or evidence of organ damage from high blood pressure is a clear disqualifier.21Transplantation. Living Kidney Donor Evaluation – Section: A GENERAL FRAMEWORK SHAPED BY DIFFERENT GUIDELINES
- Obesity: A BMI over 35 is generally considered a cutoff, though donors with a BMI over 30 may still be evaluated on a case-by-case basis.
- Diabetes: Type 1 diabetes is an absolute contraindication across all major guidelines. The picture for type 2 diabetes is more mixed, with some guidelines excluding these patients and others leaving room for evaluation.
- Kidney function: Significant albuminuria, a marker of kidney damage, above 300 mg per day is a clear disqualifier.
Compared to decades past, the criteria have loosened in some areas and tightened in others. A survey of U.S. transplant centers found that programs have become more willing to accept donors with treated hypertension or a history of kidney stones, while being more cautious about very young donors and those with borderline kidney function.22PubMed. The medical evaluation of living kidney donors: a survey of US transplant centers All programs now accept living unrelated donors, a significant change from earlier eras when only blood relatives could donate.
The Psychological Side of Donating
The physical risks of living donation get the most attention, but the psychological dimension is just as important. A systematic review of studies on living kidney donor mental health found that donors generally report low rates of anxiety and depression after donation. Many experience a boost in self-esteem and life satisfaction. However, donors whose recipients experienced graft loss or who themselves had postoperative complications were more likely to develop symptoms of anxiety and lower life satisfaction.23Transplant International. Psychological Impact of Living Kidney Donation: A Systematic Review by the EAU—YAU Kidney Transplant Working Group
This makes sense intuitively: if you went through a major surgery to help someone and the transplant failed, the emotional weight would be considerable. Transplant centers are increasingly incorporating psychological screening and follow-up into their donor programs, though the quality and consistency of that support varies.
Financial Realities for Living Donors
In most countries, the recipient’s insurance or the national health system covers the donor’s surgical and hospital expenses. But that does not mean donation is cost-free. Donors face lost wages during recovery, travel costs to and from the transplant center, childcare expenses, and sometimes lingering concerns about future insurability. A consensus conference on reducing financial barriers to living kidney donation found evidence that the economic climate may be partly responsible for declining rates of living donation, and that some donors face real financial hardship.24PubMed Central. Living-Donor Kidney Transplantation: Reducing Financial Barriers to Live Kidney Donation–Recommendations from a Consensus Conference
The conference recommended standardized reimbursement for lost wages, employment and insurance protections for donors, and better education about existing resources. In the U.S., the National Living Donor Assistance Center can help with some travel and lodging costs, and some states have passed laws offering tax deductions or job protections for donors. But the patchwork is uneven, and many potential donors understandably hesitate when they realize that altruism might come with a financial penalty.
Paired Exchange and Chain Donation
One of the most clever developments in living kidney donation is paired exchange. If you want to give a kidney to your spouse but your blood type is incompatible, your pair can be matched with another incompatible donor-recipient pair so that each donor gives to the other’s intended recipient. This has expanded into long chains, often initiated by a non-directed (altruistic) donor who gives a kidney to a stranger, triggering a cascade of transplants. The National Kidney Registry has facilitated hundreds of these chain-end transplants, and research shows that sharing non-directed donors across a multi-center network improves the diversity of waitlisted patients who benefit.25PubMed Central. The benefit to waitlist patients in a national paired kidney exchange program: Exploring characteristics of chain end living donor transplants
Donors with type O blood are especially valuable in these exchanges because their kidneys are compatible with recipients of any blood type, generating the highest number of additional transplants within a chain.26PubMed. Utilizing list exchange and nondirected donation through ‘chain’ paired kidney donations
Domino Liver Transplants
A related concept exists in liver transplantation, though it works differently. In a domino transplant, a patient with a hereditary metabolic disease (such as familial amyloid polyneuropathy or maple syrup urine disease) receives a new liver to cure their condition. Their removed native liver, while carrying the genetic defect, is otherwise structurally and functionally normal. That liver can then be transplanted into an older or sicker patient who would benefit from it, since the metabolic disease takes decades to develop and would not affect the second recipient in their remaining lifetime.27Transplantation Reviews. Domino liver transplantation: indications, techniques, and outcomes The first recipient is not a “living donor” in the conventional sense, since they needed the transplant themselves, but the effect is the same: one donated organ enables two transplants.
What Motivates Someone to Donate to a Stranger
Non-directed donation, where someone gives an organ to a person they have never met, fascinates researchers because it seems to defy straightforward evolutionary logic. A survey of non-directed kidney donors found that nearly all of them (98%) had participated in other altruistic activities before donating, and about 70% identified as religious, with more than half saying religion or spirituality positively influenced their decision. The most common triggers for getting interested in donation were hearing about someone who needed a transplant, knowing another organ donor, and viewing donation as the next step in a pattern of altruistic behavior.28PubMed. What Makes Non-Directed Living Kidney Donors Tick? Actionable Items to Increase Non-Directed Live Organ Donation
Psychological research into these donors has explored whether they process social distance differently from the general population. One study used a task measuring how willing participants were to sacrifice resources for people at varying social distances, from close friends to complete strangers. The researchers found that non-directed donors showed a flatter curve, meaning they were more willing to sacrifice for distant others compared to control participants.29Nature Reviews Nephrology. The psychology of extraordinary altruism Non-directed donors are not saints with superhuman empathy so much as people whose circle of concern extends further outward than average.
Cultural Barriers to Living Donation
Willingness to donate varies across communities for reasons that go well beyond medical knowledge. A systematic review of barriers among Chinese and Korean individuals in the United States found that the most common obstacles included lack of knowledge about how organ donation works, distrust of the healthcare and allocation system, cultural avoidance of death-related conversations, and a desire for bodily wholeness rooted in the Confucian concept of filial piety. Among Korean respondents, religion played a larger role in the decision, while among Chinese respondents, distrust of the allocation system was more prominent.30PubMed Central. Cultural barriers to organ donation among Chinese and Korean individuals in the United States: a systematic review Interestingly, improved knowledge about organ donation did not always increase willingness to donate in these groups, suggesting that the barriers are not purely informational. Addressing them requires culturally sensitive outreach, not just pamphlets.
These patterns are not unique to East Asian communities. Many cultures around the world have deep-seated concerns about body integrity after death or surgery, mistrust of medical institutions, or religious teachings that complicate donation decisions. Living donation adds another layer: you are asking a healthy person to undergo surgery with no direct medical benefit to themselves, which any culture will reasonably scrutinize.