Korea's blood supply depends on donors who are disappearing
A donation system built on schools and barracks meets a country with fewer teenagers and more elderly patients every year.
Korea collects somewhere between 2.6 and 2.8 million units of blood a year, most of it through the Korean Red Cross, which operates the bulk of the country’s donation centres alongside a smaller network run by a private blood bank. By international standards the system performs well. Whole blood is essentially self-sufficient, hospitals are supplied through a national inventory system, and the target reserve is five days of national demand. The difficulty is not the machinery. It is that the machinery was built to draw on a population that is shrinking faster than almost any other in the world.
Korean blood donation has always been unusually concentrated among the young. Mobile collection buses park at high schools and universities; military units organize unit-wide drives; volunteer hours credited toward school records reward participation. The effect is a donor base weighted toward people in their teens and twenties, who supplied roughly half or more of all donations in 2023 — a share that has fallen from something closer to seven in ten a decade earlier, but that remains extraordinary compared with countries where the median donor is middle-aged. A system this dependent on the youngest cohorts inherits their demographics directly.
Those demographics are stark. Annual births fell from around 470,000 in 2012 to roughly 230,000 by 2023, which means the pool of eighteen-year-olds available to school and military drives will contract by half within a generation, without any change in willingness to donate. Conscription intakes are shrinking for the same reason. Nothing about donor motivation needs to deteriorate for collections to fall; arithmetic is sufficient.
Demand moves the other way. Transfusion is concentrated in surgery, cancer treatment, and the management of chronic conditions, all of which cluster in older patients. Blood service statistics have consistently shown that a majority of transfused blood in Korea goes to patients aged sixty and above, and the share has been climbing as the population ages. A country adding elderly patients while subtracting adolescent donors is running two curves toward each other, and the crossing point is not distant.
The strain has already shown itself. During the pandemic years, when schools moved online and mobile collection was curtailed, national reserves repeatedly dropped from the five-day target toward two or three days, and health authorities issued public appeals. The response has been a mix of campaigns by the blood management authorities and the Red Cross — loyalty programmes, corporate and public-sector drives, donation certificates, apps that let donors book appointments and track their own iron levels — along with steady work to broaden the base beyond students and soldiers. Eligibility rules have also been revisited over time, including the criteria that had barred donors on the basis of overseas residence in certain periods.
A quieter dependence sits behind the whole-blood picture. Plasma-derived medicines — albumin, immunoglobulins, clotting factors — require source plasma in volumes that domestic collection has not matched, and Korea has for years imported a substantial portion of the plasma its manufacturers process, much of it from paid-donor systems abroad. Domestic firms are significant producers of these products; the raw material is not correspondingly domestic. Raising plasma self-sufficiency has been a stated policy goal, pursued mainly through expanding apheresis collection, but it competes for the same donors and the same donation hours as whole blood.
None of this constitutes an emergency in the ordinary sense. It is a slow structural mismatch, of the kind that is easy to manage for a decade and very hard to reverse afterward. The countries that have handled it best generally did so by making donation a routine adult habit rather than a rite of youth — a shift Korea’s institutions understand well, and which asks something of employers, hospitals and ordinary donors that no campaign alone can supply.