South Africa’s Weight-loss Revolution is Testing Medical Discipline
One in every two South African adults is considered overweight or obese. It is not surprising, then, that potentially lifesaving prescription-based metabolic medicines are surging in popularity. The challenge: demand is rising faster than the clinical structure needed to support it, leaving many patients unsure what responsible, medically supervised care should look like.
It is a concern Dr Gerhard Vosloo, a prominent sports, exercise, and lifestyle physician, says he is encountering more frequently in clinical practice. “Expectations are becoming unreasonably high, while few understanding the level of medical oversight required to manage these therapies responsibly. It’s just not as simple as prescribing an aggressive regime and standing back.”
To address issues in today’s weight management sector, Dr Vosloo established Dr GL Vosloo Medical Practice, managed by BioWell, as a formal online medical practice built around sound clinical judgment, structured care, and meaningful patient oversight. He says, “We’re building a model – one that could serve as a stable structure for the wider industry, where sound medical judgment is consistently prioritised over the public’s growing appetite for weight loss drugs.”
The danger of normalising prescription therapy
Dr Vosloo cautions that the rapid rise of these medicines in the mainstream is oversimplifying a highly complex subject and making pharmaceutical use seem routine, when it should remain a final option after disciplined nutrition- and exercise-led approaches have been fully explored.
“Misinformation spreads like wildfire online. People are starting to view prescribed medicines as a routine diet option, when they should be a last resort. Pharmaceuticals are powerful tools for people who struggle to lose weight, but they should be introduced only when medically appropriate, and only after nutrition, exercise, and appropriate supplementation have been fully explored.”
He maintains that prescribed medicines should form part of a structured metabolic management programme that, when used correctly, will reduce cardiometabolic risk, improve insulin sensitivity, regulate appetite, and support meaningful body composition change. The goal is to improve metabolic health under disciplined supervision, and when treatment is not medically necessary, doctors must refuse to prescribe.
“Clinical eligibility must be determined by medical rationale,” he says. “A patient’s preference for medication, emotional pressure to start treatment, or the ability to pay cannot override clinical judgement. Where medical need is absent, a BioWell doctor will decline to prescribe and direct the patient to a non-pharmaceutical, doctor-supported metabolic management pathway.”
Dosing with discipline
Beyond unnecessary prescribing practices, Dr Vosloo stresses that the industry is undermined by over lenient dosing habits. As practiced on the BioWell platform, dosing decisions should instead follow a conservative model guided by clinical responses and tolerability rather than speed of weight loss. The objective is to protect overall health while supporting steady progress that the body can sustain.
“An unfortunate consequence of aggressive dosing is the loss of muscle mass. It’s easier for the body to draw from muscle than it is to mobilise fat, particularly when calories and protein are low – a hallmark of aggressive dosing protocols. The nutritional and training commitment needed to offset muscle loss under more radical regimens are difficult to manage for most people. It’s far safer and more sustainable to take low doses over a longer period.”
“BioWell doctors are more measured in our approach. Conservative dosing and escalation protocols help keep muscle loss to a minimum, while structured nutrition and exercise support plans strengthen the muscular system. This also reduces the risk of nutritional deficiency and limits the physiological stress that often accompanies poorly managed treatments.”
The end goal, Dr Vosloo explains, is to safely and gradually bring South Africa’s obesity crisis under control without creating any additional harm. “Prescription-based metabolic medicine is an undeniably powerful tool in the fight against obesity – one we cannot afford to lose. It’s a lifeline for people battling weight-related illness, but it’s also become a dangerous crutch for those willing to gamble with their health just to lose a few kilograms quickly. If we want to change the health trajectory of millions, we need to rein in aggressive dosing practices and establish a common-sense structure across the sector.”
