The human in the data
- Leanne Renchken
Chemical pathologist Dr Siyabonga Khoza talks about medicine’s shifting paths, humanising data, and fulfilling a life-long prophecy.
Dr Siyabonga Khoza’s academic and professional journey spans nearly 30 years and in this time, he has realised that what matters most between the laboratory bench and the often-unseen patient waiting for answers, is trust. As a chemical pathologist, he is a great believer in humanising data, driven by a constant awareness that a metric represents a living person.
This empathy mirrors how he reflects on his own life - he is both funny and philosophical when describing his medical career’s shifting course, remaining unfazed and resilient in the face of financial and institutional hurdles. Instead of looking back with a sense of what might have been, he views each unexpected turn as vital to his identity.
“I came to understand that growth is not uniform and each stage of my journey has added something essential to who I am as a scientist and a clinician,” he says. “Maintaining trust in my goal was mainly about focusing on purpose rather than the pace.”
Prophetic professor
It turns out that a wise family member inadvertently set him up for a career in academia. Long before he started his PhD, his identity document bore the prophetic first name: Professor. Given to him by his paternal grandfather, the name helped him stand out from the many classmates who shared his common isiZulu name. During medical training, however, he switched to Siyabonga to avoid creating confusion in the academic space, but the prophecy, while weighty, was well on the way to being realised.
There was a lot of pressure in having to live up to the name, he explains: “It’s all good now. I’m used to facing pressure, so it doesn’t really affect me. In fact, I now embrace the name.”
His unflappable nature was forged in rural KwaZulu-Natal. Raised by his grandparents, he only defaulted to science at school after eliminating all the subjects he disliked. Yet, he was an enquirer from day one – levelling questions at everyone about everything, from deconstructing traditional eating customs to seeking stories about his grandfather’s five wives. His curiosity was actively encouraged within a home where success was defined by the number of cattle raised, stability, and the kindness inherent in communal living.
“The idea of being poor didn’t really exist in the early years of my life because we had plenty. Suffering was never left solely to the sufferer in the community,” he explains. Neighbours would rally to ensure that someone facing loss or starting out could build back or build up their livelihood with what the community could provide.
While many of his friends and peers settled into this life, Khoza completed a Bachelor of Science at the University of Zululand. However, an internal calling towards service led him to µÚÒ»³Ô¹ÏÍø University. Given that he already held a BSc degree, funding structures barred him from applying for the standard bursaries. Undeterred, he spent six years working weekends at The Sweat Shop, an institution among the Johannesburg running community, completely self-funding his medical tuition.
Discipline from the retail floor
The retail floor became an unlikely clinical training ground, teaching him time allocation, financial discipline and how to leave personal anxieties at the door in order to manage other people’s emotions.
"I developed a need to trust myself – going into any exam, I knew I had to pass," he shares. "It was non-negotiable. When you are paying for yourself, you cannot afford to pay twice for the same level."
Balancing work alongside medical rotations paid off. After qualifying and completing community service, his pragmatism and unwavering momentum fuelled a rapid ascent to his appointment as Head of Department, all while undertaking his doctoral research. Now, within his department, he strives to ensure that the laboratory doesn't lose its human face. By bringing his team into the ward to address clinical complaints collectively, he exposes them directly to human suffering and the empathic response.
"Every medical sample represents a person," Khoza notes. "It's not just a sample and the result is not just a result. Our work has a direct impact on how diagnoses are made, how treatments are chosen, and on patients’ final outcomes."
This philosophy anchors his doctoral research, completed in January 2026, which establishes localised early-detection markers for kidney disease. Systems relying on broad baseline references often flag damage only when an individual has lost roughly half their renal function – a threshold Khoza notes is already too late. To expand public health systems, he co-developed a national diabetes data dashboard allowing healthcare administrators to track records via a live visual map and to deploy resources precisely where they are needed most.
Time out
To balance his high-stakes responsibilities, Khoza spends quality time with his family. “My wife is, thank God, not an academic,” he says, joking that one in the family is more than enough. He also turns to endurance running – a habit picked up during his years at The Sweat Shop – when he needs a reset.
"Running a marathon means facing constant ups and downs. There are moments where you need to strengthen your mind, test your limits and overcome physical pain to reach the finish line," he says.
With his graduation approaching and his associate professorship on track, Khoza does not view his journey as an extraordinary feat but rather as a set of deliberate, practical steps needed to arrive at a particular destination. It is the same pragmatic approach he takes when training for the Comrades Marathon. Once the race is over and he has achieved his purpose, he reminds himself: “You know, I can pretty much do anything that I want to do”.
- Leanne Rencken is a freelance writer.
- This article first appeared in CURIOS.TY, a research magazine produced by  and the .
- Read more in the 21st issue, themed #Trust — the invisible glue binding society, science and technology.