Sound medicine, safer environments and smarter policy are all needed to protect every heart, writes
PAT ONUKWULI
The 249th Inaugural Lecture of the University of Nigeria, delivered by Professor Raphael Anakwue and titled “Beyond Traditional Cardiovascular Risk Factors: Toxic Shadows and the Heart-Habitat Interface,” offers a thought-provoking examination of contemporary cardiovascular health. It challenges familiar assumptions, broadens the conversation around heart disease, and invites closer reflection on influences that often receive less attention in conventional practice.
For this author, the lecture holds personal resonance. Anakwue was not merely a distinguished physician; they were also classmates and dormitory mates in Asagba House at Saint Patrick’s College, Asaba, in the mid-1970s. The college then was more than a place of academic instruction: it shaped young people in character, discipline, service and leadership, preparing them for responsible adulthood.
Even in those early years, Anakwue clearly stood out for exceptional academic ability and disciplined conduct. His intellectual brilliance was matched by humility, diligence, hygiene, moral steadfastness and respect for others, making him, in the eyes of contemporaries, an ideal student. Those qualities foreshadowed the seriousness of purpose that later defined a distinguished medical and scholarly career. It is therefore hardly surprising that he progressed from medical training at the University of Nigeria to the professorial podium, a progression that made the occasion particularly significant.
The growing burden of cardiovascular disease underscores the lecture’s urgency. Cardiovascular diseases remain among the leading causes of death worldwide and are rising across Africa, causing disability and premature mortality, often during productive years. Their financial burden is also severe, with treatment frequently involving lifelong medication, repeated investigations, hospital admissions, specialist procedures and major surgery.
For families paying directly for healthcare, a single cardiovascular crisis may consume years of savings. Prevention is therefore not merely preferable to treatment; it is medically, socially and economically necessary. High prevalence, high mortality and expensive treatment make this lecture especially important.
The lecture’s most compelling insight is that cardiovascular medicine must extend beyond the traditional clinical lens. Conventional prevention rightly emphasises blood-pressure control, cholesterol reduction, diabetes management, smoking cessation, regular exercise and healthy weight. Yet these measures address only part of the risk landscape.
It therefore highlights less visible but equally consequential influences on heart health. Persistent exposure to traffic pollution, generator fumes, smoky cooking fuels, industrial emissions and hazardous workplaces may compound conventional risk factors and place additional strain on the cardiovascular system. Effective prevention must consequently address both established clinical risks and these environmental exposures.
This is where the lecture’s “heart-habitat” concept matters. The heart does not function independently of its surroundings. Air pollution, heavy metals, pesticides, industrial chemicals, plastics and occupational toxins may operate alongside traditional risk factors, increasing cardiovascular harm.
However, environmental cardiology should complement conventional cardiovascular medicine, not replace it. Hypertension, diabetes, smoking, obesity, dyslipidaemia and physical inactivity remain powerful, established causes of disease. Environmental explanations must broaden personal responsibility, not diminish it.
Similarly, scientific enthusiasm must be balanced with caution. Environmental exposures can be difficult to measure; people may be exposed to several pollutants simultaneously; and association does not automatically prove causation. Nigeria needs neither unquestioning acceptance nor dismissive scepticism, but rigorous local research into exposures, biological mechanisms, biomarkers and effective interventions.
The argument therefore extends beyond the consulting room into the realm of public policy. Individuals cannot reasonably be expected to avoid exposures over which they have little control: roadside traders inhale traffic fumes, households reliant on generators or smoky cooking fuels often lack viable alternatives, and mechanics, battery recyclers and industrial workers remain vulnerable where occupational safeguards are inadequate.
Accordingly, clean air, reliable electricity, safer workplaces, proper waste management, cleaner household energy and stronger chemical regulation should be regarded not merely as environmental priorities but as essential components of cardiovascular health policy and long-term disease prevention.
The proposed “Heart-Healthy City” warrants serious consideration. Nigerian cities need improved air-quality monitoring, stronger controls on industrial emissions, safer disposal of hazardous waste, more green spaces, and urban designs that encourage walking and physical activity. Health and environmental agencies should collaborate rather than operate in isolation.
Clinical practice must also evolve. Doctors should continue asking about diet, smoking, exercise, and family history, but increasingly ask where patients live and work, what cooking fuels they use, and whether they are exposed to harmful chemicals or pollution.
The broader message is shared responsibility, not transferred responsibility. Individuals must manage established risk factors, but governments must create healthier environments. Doctors must treat patients while recognising environmental influences. Universities must generate credible evidence, while industries must reduce emissions and protect workers.
That balance may be the enduring value of Professor Anakwue’s lecture. It rejects the false choice between the individual and the environment, between traditional medicine and environmental cardiology, and between personal discipline and public action. Each remains necessary because none is sufficient on its own. Therefore, for a Heart-Healthy Nigeria, sound medicine, safer environments and smarter policy should work together to protect every heart.
Dr. Onukwuli is a legal scholar and public affairs analyst. patonukwuli2003@yahoo.co.uk