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Series 1, Blog 1: The Evolution of Environmental Health and its Critical Role in Public Health

Series 1: Equity, Justice and Sustainability - Perspectives on Environmental Health


Welcome to my new blog series on ‘Equity, Justice and Sustainability - Perspectives on Environmental Health’. This series aims to explore the journey of environmental health, its impact on public health, and its relevance in the context of global events such as the COP28 summit. As a health geographer and a public health practitioner, I will be sharing insights and reflections on these topics. I will delve into key issues from the evolution of the field to present-day legislative milestones, some case studies on environmental injustice, and the links between environmental sustainability and public health. By understanding lessons from the past and examining emerging threats through an environmental health lens, we can cultivate insight into building resilient, equitable systems for generations to come. In this blog series, I will explore the crucial role of environmental health in protecting community welfare while charting a course towards healthy people on a healthy planet. 

This blog post is the first in this series, so stay tuned for more enlightening discussions in the coming weeks.

As the world comes together at the 2023 United Nations Climate Change Conference (COP28) in Dubai, we are reminded of environmental health’s vital role in protecting human health and wellbeing on a rapidly changing planet. Tracing the field’s evolution underscores how intertwined environment and public health have become.

Environmental health’s foundations were laid during the 19th century’s Industrial Revolution when cramped, unsanitary living conditions bred diseases. Early urban planning efforts paved the way for modern sanitation infrastructure. But deadly pollution events, like 1952’s Great Smog of London, revealed gaps in emerging environmental health policies.

Pivotal works like John Snow’s cholera study and Rachel Carson’s “Silent Spring” fueled major advancements by linking environmental contaminants to human health impacts. Their evidence-based approaches demonstrated that preventing hazards could save lives. 


Our health is intricately connected to the environments we inhabit - from the water we drink to the air we breathe, the food systems that nourish us, and the communities we call home. Yet in our rapidly changing world, environmental degradation and threats like pollution, biodiversity loss, climate change, and rampant urbanisation increasingly jeopardise human and ecological well being.  

Today, we find ourselves at a critical juncture in human history. The escalating threats of climate change, biodiversity loss, chemical pollution, and other environmental challenges underscore the urgent need for robust environmental health measures. As public health professionals, we recognise that healthy communities rely on livable environments/neighbourhoods with clean air and water, food security, and resilience to disasters like heat waves and floods (which are becoming more common because of the issue of climate change). Furthermore, we have an obligation to continue this legacy. Our policies and interventions can prevent diseases, mitigate environmental hazards, and promote healthy, sustainable communities.

However, a stark reality that we must confront is that the most vulnerable populations across the globe often bear the heaviest environmental health burdens. These populations, despite contributing the least to climate change, are the ones most affected by its consequences. This glaring inequality is a central focus of the COP28 climate negotiations, which aim to center environmental justice and promote equitable climate action3.

As our global population continues to grow and environmental pressures intensify, events like Paris Agreement and COP28 serve as stark reminders that our climate and health futures are inextricably linked. We cannot afford to view them in isolation. The health of our planet and the health of our people are two sides of the same coin.

Looking ahead, it is imperative that we continue to advance environmental health on a global scale. We must learn from the lessons of the past and apply them to our present and future actions. This will require dedication, multilateral cooperation, and a commitment to sustainable practices.

In conclusion, the path to securing a healthy planet and public health for future generations is a challenging one. However, with concerted effort and a shared vision, it is a path that we can navigate successfully. The journey starts with each one of us making a commitment to environmental health and sustainability. Together, we can make a difference and ensure a healthier and more sustainable future for all.

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