
While cutting-edge cell therapies are offering groundbreaking new hope to local patients, the foundation behind these medical miracles is facing a silent crisis. The register of people who volunteer to give these life-saving cells is aging out faster than it is being replaced.
The South African Bone Marrow Registry (SABMR) has revealed that nearly half of its active stem cell donors (46.3%) are now over the age of 46. Meanwhile, the most critical demographic—young people aged 16 to 25—makes up a staggering 4.2% of the database.
With the median donor age sitting at 44, the registry is facing a major demographic bottleneck that could soon impact patients fighting leukemia, lymphoma, and other life-threatening blood disorders.
The Problem: Why Age Matters in Medicine
Just like our hearts or joints, our stem cells age over time. Because of this biological reality, transplant centers worldwide heavily favor younger donors.
“Transplant centers prefer younger donors as younger stem cells generally lead to better transplant outcomes for patients,” explains Jane Ward, Deputy Director for the SABMR. “If we do not significantly increase recruitment among younger South Africans now, we risk creating a future shortage of suitable donors when patients need them the most.”
After 35 years of operation, an aging database is a natural challenge. Over the next decade, thousands of local donors will hit the strict donor retirement age of 60, or become medically ineligible, leaving a critical gap in availability.
Quality and Diversity Over Quantity
The registry currently has 78,000 active donors, but finding a match isn’t simple. A patient only has a 1 in 100,000 chance of finding a compatible stranger, and matches are heavily tied to ethnic background. Currently, the local database does not accurately reflect South Africa’s diverse population.
SABMR’s goal is to sign up 4,000 new, eligible youth donors every year. However, Donor Recruitment Supervisor Gaelen Naidoo notes that finding committed donors is the real challenge. Currently, only 59% of people who sign up pass the medical screening process. The registry needs young people who are contactable and deeply committed to seeing the process through if they get called.
To register or donate visit sabmr.co.za.

