Yes, you can donate a portion of your liver to someone who needs a transplant and continue living a normal, healthy life. This is called living donor liver transplantation, and it works because the liver is the only organ in the human body that can regenerate. Surgeons remove a section of your liver, transplant it into the recipient, and both pieces grow back to functional size within a couple of months.
How Liver Regeneration Works
The liver’s ability to regrow is what makes living donation possible. After surgery, the remaining portion in the donor and the transplanted portion in the recipient both rapidly increase in size. According to Mayo Clinic, the donor’s liver typically grows back to its previous size, volume, and capacity within about two months. The recipient’s new liver follows a similar timeline, expanding quickly in the first two months and eventually stabilizing at around 90% of a normal liver’s volume.
This regeneration isn’t growing a new lobe in the shape of the old one. Instead, the existing tissue enlarges until it can handle the full workload of a complete liver. Your liver performs over 500 functions, from filtering toxins to producing proteins that help blood clot, and the regenerated organ handles all of them.
What Surgeons Actually Remove
The portion removed depends on the recipient’s body size and needs. In most adult-to-adult transplants, surgeons take the right lobe, which makes up roughly 60% of the liver. When the recipient is smaller, such as a child, the left lobe or even just a segment may be enough.
Which lobe is removed matters for the donor’s risk. A meta-analysis of 67 studies found that right lobe donors are about 63% more likely to experience major complications compared to left lobe donors. However, the risk of death after surgery did not differ significantly between the two groups. Because of the lower complication rate for donors, transplant teams increasingly consider left lobe donation when the recipient’s size allows it.
Surgical Risks and Complication Rates
Living liver donation is major abdominal surgery, and it carries real risks. In a study of 890 living liver donors at a single center, about 19.5% experienced at least one complication. The vast majority of these were minor. Wound-healing issues were the most common, followed by bile leaks (most of which resolved on their own within three weeks) and infections like pneumonia or urinary tract infections.
Serious, life-threatening complications occurred in about 2.9% of donors. These included bile leaks requiring additional procedures, vascular injuries during surgery, and severe infections needing intensive care. The overall mortality rate for living liver donors, drawn from a meta-analysis of nearly 50,000 donors worldwide, is 0.06%. That translates to roughly 1 in 1,700 donors. It’s a small number, but not zero, and every donor is informed of this risk before proceeding.
Who Can Be a Living Liver Donor
You must be at least 18 years old, though some transplant centers require donors to be 21 or older. Beyond age, the screening process is extensive. Expect a full physical exam, blood work, imaging scans of your liver, cancer screenings, and a review of your complete medical history. You’ll also undergo a mental health evaluation to confirm you understand the risks and are donating voluntarily.
Conditions that typically disqualify someone include significant liver disease, obesity, active substance use disorders, and certain chronic illnesses that would make major surgery unsafe. The evaluation process itself can take several weeks to complete.
Recovery Timeline
Most donors spend five to seven days in the hospital after surgery. You’ll be encouraged to walk as soon as you’re able, and activity gradually increases from there. The general timeline looks like this:
- First 4 weeks: No lifting anything over 15 pounds. Walking daily is encouraged, but exertion should be limited.
- 4 to 6 weeks: Most donors can return to work, depending on how physically demanding their job is.
- Up to 12 weeks: No heavy lifting over 30 pounds.
- 4 to 6 months: Most donors report feeling fully back to normal.
Donors are strongly encouraged to avoid alcohol and any medications or supplements that could stress the liver for at least six months after surgery. This gives the regenerating liver time to fully recover without added burden.
Long-Term Health After Donation
The good news is that long-term studies show liver donors generally have normal liver function and lab results well after surgery. The liver regenerates reliably, and most donors return to their baseline health without lasting limitations.
One notable finding: about 10% of donors develop mildly low platelet counts in the years following donation. Platelets are blood cells involved in clotting, and this dip is thought to be related to subtle changes in blood flow through the regenerated liver. For most donors, this doesn’t cause symptoms or require treatment, but it’s something transplant teams monitor during follow-up visits.
Psychosocial outcomes are also largely positive. Most donors report high satisfaction with their decision and no lasting negative impact on their emotional or interpersonal well-being.
Who Pays for the Surgery
The donor’s surgical and immediate medical costs are typically covered by the recipient’s health insurance, not the donor’s. This includes the evaluation, the surgery itself, and postoperative care in the hospital. If you don’t have your own health insurance, you can still donate in most cases, since the recipient’s plan covers the donation-related expenses.
There are gaps in this coverage, though. If the evaluation process uncovers an unrelated health issue, treating that condition won’t be covered by the recipient’s insurance. Follow-up care in the months and years after donation is inconsistently covered: only about 55% of transplant programs reported paying for donor-related follow-up. And there’s a practical financial cost that insurance doesn’t address, namely the four to six weeks of missed work during recovery. Some employers offer paid leave, and organizations like the National Living Donor Assistance Center can help with lost wages and travel costs, but it varies widely.
One concern worth knowing about: a survey of 10 U.S. insurance carriers found that living liver donors may face higher costs for life insurance or reduced access to policies after donation. Some potential donors have decided not to proceed specifically because of these financial uncertainties. There’s no federal law that fully protects donors from life or disability insurance discrimination, though advocacy efforts are ongoing.