Health and environment: The twin pillars of prosperity

There is an African proverb that says, “When the roots of a tree begin to decay, it spreads death to the branches.” The same can be said of nations and businesses. When the health of people and the health of the environment deteriorate, productivity, prosperity, and economic growth inevitably suffer.

For decades, health and environmental sustainability were treated as separate policy conversations. Today, evidence from across the world shows they are inseparable. Clean air, safe water, healthy workplaces, and sustainable ecosystems are not just environmental ideals; they are economic imperatives.

The World Health Organisation (WHO) estimates that nearly one in four global deaths is linked to environmental conditions. Air pollution alone contributes to millions of premature deaths annually, while poor sanitation, unsafe water, and climate-related disasters continue to weaken economies and overstretch healthcare systems.

The assertion that health and sustainability go hand in hand is therefore not aspirational rhetoric. It is an economic reality.

A healthy citizenry is the engine room of national productivity. Healthy workers are more innovative, more productive, and less absent from work. Healthy children learn better in schools. Healthy communities create stronger local economies. Conversely, polluted environments increase healthcare costs, reduce labour efficiency, discourage investment, and deepen poverty cycles.

Nigeria offers practical examples of this intersection.

In many parts of the Niger Delta, environmental degradation from oil pollution has affected fishing, farming, and livelihoods for decades. Communities battling polluted water sources and declining biodiversity also battle rising health challenges. The economic consequences are enormous: reduced household incomes, increased disease burden, and weakened social stability.

Similarly, in Lagos, Port Harcourt, and other rapidly urbanising cities, poor air quality from generator emissions, waste burning, and traffic congestion increasingly affects respiratory health and workforce productivity. WHO notes that air pollution now represents one of the greatest environmental threats to human health globally.

Yet across Africa, we are also seeing examples of how environmental stewardship improves economic outcomes.

Rwanda’s ban on single-use plastics did not merely clean its streets; it strengthened Kigali’s reputation as one of Africa’s cleanest and most investment-friendly cities. Kenya’s growing renewable energy investments are creating jobs while reducing pollution exposure. Morocco’s large-scale solar investments demonstrate how climate action can simultaneously support energy security, industrial growth, and public health outcomes.

The business case is equally compelling.

Forward-looking organisations now recognise that workplace wellness and environmental responsibility are interconnected competitive advantages. Companies investing in cleaner operations, safer workplaces, employee wellbeing, and sustainable supply chains are increasingly attracting investors, retaining talent, and improving operational resilience.

Globally, ESG-conscious investors are paying closer attention to how businesses manage environmental and social risks because poor environmental practices eventually become financial liabilities. Climate-related illnesses, unsafe working conditions, and pollution-driven disruptions directly affect insurance costs, operational continuity, and long-term profitability.

This is why the United Nations Sustainable Development Goals intentionally connect SDG 3 (Good Health and Well-being) with SDG 6 (Clean Water and Sanitation), SDG 13 (Climate Action), and SDG 15 (Life on Land). Sustainable development cannot happen in silos.

Ancient wisdom understood this long before modern ESG frameworks emerged. Traditional African communities protected forests, rivers, and farmlands because they understood that human survival depended on ecological balance. In many cultures, rivers were regarded as sacred not merely for spiritual reasons but because communities recognised their direct link to health, agriculture, and prosperity.

There is also a leadership lesson here.

Many governments and organisations still treat environmental spending as a cost centre rather than a productivity investment. But prevention will always be cheaper than remediation. It costs less to prevent pollution than to treat pollution-related diseases. It costs less to build climate resilience than to recover from climate disasters.

The COVID-19 pandemic taught the world a painful lesson: economies cannot thrive when health systems collapse. Likewise, economies cannot remain productive when environmental systems fail.

As Africa pursues industrialisation and economic growth, we must reject the false choice between development and sustainability. The future belongs to nations and businesses that understand that economic competitiveness, environmental stewardship, and human well-being are mutually reinforcing.

Healthy people build productive economies.

Healthy environments sustain healthy people.

And together, they form the twin pillars upon which enduring prosperity must stand.