Sustainability in Global Healthcare: Final Thoughts

Stewardship, Nature-Based Solutions, and Conservation Medicine: Building a Healthier Future

Healthcare exists to protect and improve human health and well-being. Yet the health sector itself consumes vast amounts of energy, water, materials, and land, generating substantial waste and greenhouse gas emissions. As healthcare systems worldwide confront the realities of climate change, biodiversity loss, pollution, and resource scarcity, sustainability can no longer be viewed as a peripheral concern. It has become a core responsibility of health leadership.

This final installment in the Sustainability in Global Healthcare Series explores three interdependent approaches that can guide healthcare toward a more sustainable and resilient future: Healthcare Stewardship, Nature-Based Solutions, and Conservation Medicine. Together, these approaches challenge the entire health sector and the biomedical scientific enterprise to think beyond treating illness and toward sustaining the environmental systems upon which health and well-being in the natural world ultimately depends.

Healthcare Stewardship: Caring for More Than Patients.

Stewardship has long been a foundational principle in healthcare. Traditionally, it referred to the responsible management of financial resources, clinical interventions, medications, and public trust. Today, stewardship must be expanded to include the environmental resources that support health and well-being in all of the natural world.

Healthcare stewardship recognizes that hospitals, clinics, public health agencies, and health systems worldwide serve not only current patients but also future generations. Decisions about procurement, infrastructure, energy use, waste management, and transportation have direct implications for community health and environmental sustainability.

A stewardship approach asks healthcare leaders to consider several key questions:

•        Are resources being used efficiently and equitably?

•        Can patient outcomes be improved while reducing environmental impacts?

•        How can healthcare organizations minimize waste and lower health expenditures without compromising quality or safety of care?

•        What responsibilities does the biomedical scientific enterprise have to future generations?

Examples of healthcare stewardship include:

•        Reducing unnecessary diagnostic testing and procedures.

•        Transitioning to renewable energy sources.

•        Implementing sustainable purchasing practices.

•        Expanding telehealth where clinically appropriate.

•        Reducing food waste and promoting sustainable food procurement.

•        Designing facilities with energy-efficient technologies and nature-based solutions.

Stewardship reframes sustainability not as a separate environmental initiative but as a natural extension of global healthcare systems’ ethical commitment to do good, avoid harm, and use resources wisely.

Nature-Based Solutions: Working With Nature to Improve Health.

Nature-based solutions are actions that protect, restore, or sustainably manage ecosystems while simultaneously addressing societal challenges including human-induced climate change, geopolitical conflicts, emerging infectious diseases, and all the determinants of health. In healthcare, these solutions recognize that healthy natural environments contribute directly to physical, mental, and social well-being of all living things.

Rather than relying exclusively on engineered infrastructure, nature-based solutions leverage ecological and environmental processes to achieve health and well-being objectives such as:

Urban trees, parks, wetlands, and green corridors do more than improve a neighborhood's appearance. They reduce heat island effects, filter air pollutants, manage stormwater runoff, encourage physical activity, and strengthen social connectedness. Healthcare facilities have taken note — healing gardens, green roofs, and integrated natural landscapes are increasingly standard features of campus design, supporting patient recovery and protecting staff well-being.

Natural ecosystems are among the most effective buffers against climate-related hazards. Wetlands absorb floodwaters, forests stabilize watersheds, coastal marshes blunt storm surges, and urban tree canopies cool neighborhoods during extreme heat events. As climate-driven health threats intensify, healthcare organizations have every incentive to treat ecosystem-based resilience not as an environmental amenity but as a core infrastructure investment.

The evidence is no longer ambiguous: exposure to natural environments reduces stress, anxiety, depression, and social isolation. Park prescriptions, therapeutic horticulture, nature-based rehabilitation, and outdoor physical activity programs have moved from the margins of clinical practice toward the mainstream. Healthcare systems that integrate natural environments into preventive and therapeutic care are not pursuing a wellness trend — they are following the science.

Healthy ecosystems deliver services no hospital can replicate: clean air, clean water, pollination, food production, climate stability, and the ecological checks that regulate disease transmission. Strip those systems away and no amount of clinical capacity fills the gap. Biodiversity conservation, viewed through this lens, is not an environmental objective competing with public health priorities — it is a public health investment in its own right.

Conservation Medicine: Connecting Human, Animal, and Environmental Health.

Conservation medicine emerged from the recognition that human health, animal health, and ecosystem health are profoundly connected.

Using Planetary Health, One Health, and EcoHealth approaches, conservation medicine focuses on understanding how environmental changes influence infectious disease emergence, biodiversity conservation, the planetary commons, and population health management.

Conservation medicine examines interactions among wildlife populations, domestic animals, human communities, ecosystems, and environmental stressors.

Conservation medicine gained prominence as biomedical researchers documented how habitat destruction, land-use change, wildlife trade, and biodiversity loss contribute to emerging infectious diseases worldwide. Examples include:

•        Ebola virus outbreaks linked to ecosystem disruption.

•        Lyme disease patterns influenced by ecological changes.

•        Nipah virus emergence associated with land-use changes.

•        Avian influenza transmission across animal-human interfaces.

Conservation medicine emphasizes proaction rather than reaction. Instead of focusing solely on disease control after outbreaks occur, it seeks to address the environmental conditions that facilitate disease emergence in the first place.

Why Biodiversity Matters to Healthcare.

Biodiversity is often discussed as an environmental issue, but its implications for health are profound. Healthy ecosystems help regulate disease transmission through complex ecological and environmental relationships that limit pathogen spread. Diverse agricultural systems improve resilience against pests, diseases, and climate variability. Many medicines originate from natural compounds found in plants, animals, fungi, and microorganisms. Examples include:

•        Aspirin derived from willow bark.

•        Paclitaxel — used in breast, ovarian, and lung cancer treatment — derived from the Pacific yew tree.

•        Artemisinin — a frontline antimalarial, with derivatives under investigation in oncology — derived from sweet wormwood.

Loss of biodiversity may eliminate future opportunities for medical discovery before they can be realized. Ecosystems play critical roles in carbon storage and climate regulation, helping reduce climate-related health risks. Protecting biodiversity therefore supports both environmental sustainability and long-term public health security.

What Healthcare Organizations Can Do Now.

Strengthen Environmental Stewardship

•        Measure environmental footprints.

•        Establish sustainability goals.

•        Reduce waste and emissions.

•        Incorporate sustainability into governance structures.

Invest in Nature-Based Infrastructure.

•        Create healing gardens and green spaces.

•        Improve campus biodiversity.

•        Utilize green stormwater management systems.

•        Expand tree canopy and shade coverage.

Advance One Health, EcoHealth, Planetary Health, and Conservation Partnerships.

•        Collaborate with environmental agencies.

•        Partner with wildlife and veterinary organizations.

•        Participate in climate and ecosystem resilience planning.

•        Incorporate ecological surveillance into public health preparedness.

Educate the Workforce.

•        Integrate sustainability into professional training.

•        Build climate and health literacy.

•        Encourage interdisciplinary collaboration across health and environmental sectors.

Looking Ahead: From Sustainability to Regeneration.

The next phase of healthcare sustainability may extend beyond reducing harm toward actively restoring the natural systems that support health. This emerging vision—sometimes called regenerative healthcare—asks whether healthcare organizations can improve community well-being while simultaneously restoring ecosystems, reducing inequities, and strengthening resilience.

In this view, hospitals become anchors of environmental responsibility, public health agencies become partners in ecological and environmental resilience, and healthcare professionals become advocates for both human and planetary health.

The future of healthcare will not be determined solely by advances in medicine, technology, or pharmaceuticals. It will also depend on how effectively societies protect the ecosystems that provide clean air, safe water, stable climates, nutritious food, and biological diversity. Stewardship, nature-based solutions, and conservation medicine offer practical pathways toward that future—one in which the health of people and the health of the planet are recognized as fundamentally connected.

Conclusion.

Sustainability in healthcare is ultimately about preserving the conditions that make health and well-being possible in the natural world. Healthcare stewardship promotes responsible use of resources, nature-based solutions harness ecosystems to improve well-being and resilience, and conservation medicine highlights the profound connections among human, animal, plant, and environmental health. Together, these approaches provide a roadmap for global healthcare delivery systems seeking to meet present needs without compromising the ability of future generations to thrive.

In an era of climate change, biodiversity loss, and emerging health threats, sustainability is not merely an environmental objective — it is the precondition for everything medicine promises.

 For a more in-depth look at these three approaches, check out my book series on Sustainability in Global Healthcare, available at all online retail booksellers:

Healthcare Stewardship: A 21st Century Global Call to Action.

Nature-Based Solutions in Healthcare: Addressing Anthropocene Climate Change.

Conservation Medicine: A Multidisciplinary Approach to Maintaining Global Biodiversity.