One Health
Definition of One Health
One Health is a collaborative approach to health that recognises the interconnection between human health, animal health, and the health of ecosystems. It promotes coordinated action across disciplines — including agriculture, veterinary medicine, public health, and environmental science — to prevent disease, improve resilience, and support sustainable development.
Rather than treating human, animal, and environmental health as separate issues, One Health views them as interdependent systems, where changes in land use, farming practices, climate, and biodiversity directly influence disease risk and overall well-being.
Why One Health Matters
One Health matters because many of today’s most pressing challenges cross traditional sector boundaries. Its importance includes:
Reducing zoonotic disease risks at the human–animal interface
Strengthening biosecurity and disease surveillance
Improving food safety and animal welfare
Addressing antimicrobial resistance through coordinated management
Enhancing resilience to climate change and environmental degradation
Supporting sustainable agriculture and land use planning
By encouraging cooperation rather than isolated responses, One Health enables earlier prevention, more effective interventions, and long-term health protection.
Core Principles of One Health
Interdisciplinary Collaboration – Shared action across health, agriculture, and environment sectors
Prevention-Focused – Emphasis on early detection and risk reduction
Systems Thinking – Understanding how ecological and social factors influence health
Data Sharing and Surveillance – Integrated monitoring of diseases and environmental change
Sustainability – Aligning health outcomes with environmental stewardship
Policy Integration – Coordinated regulations and governance across sectors
Frequently Asked Questions on One Health
What is One Health?
One Health is a collaborative approach that recognises the interconnected health of people, animals and the environment.
Why is One Health important in agriculture?
Agriculture sits at the intersection of animal, human and environmental systems, making One Health essential for food safety, disease prevention and sustainable farming.
How does One Health relate to zoonotic diseases?
One Health helps address diseases that can spread between animals and humans, known as zoonotic diseases, through coordinated monitoring and prevention.
What is the link between One Health and antimicrobial resistance (AMR)?
Responsible use of antibiotics in livestock supports One Health by reducing the risk of antimicrobial resistance across human and animal populations.
How does One Health support food safety?
It promotes integrated management of biosecurity, hygiene and environmental health, reducing contamination risks across supply chains.
How does environmental health fit into One Health?
Healthy ecosystems reduce disease risk, improve water quality and support biodiversity, all of which influence human and animal health.
What role do farmers play in One Health?
Farmers contribute through biosecurity measures, responsible medicine use, sustainable land management and animal welfare standards.
Is One Health a global policy framework?
Yes — international organisations promote One Health as a coordinated strategy to manage public health, agriculture and environmental challenges.
How does climate change relate to One Health?
Climate change can alter disease patterns, water availability and ecosystem balance, making integrated health approaches increasingly important.
How can One Health improve sustainability?
By aligning environmental protection, animal welfare and public health goals, One Health supports long-term resilience and responsible food systems.
Related Terms
Antimicrobial Resistance
Useful Resources on One Health
Explore these authoritative resources to learn more about One Health principles, policy frameworks, and real-world applications:
World Health Organization (WHO) – One Health – Global guidance on integrated health approaches.
FAO – One Health in Agriculture and Food Systems – Resources linking farming practices with human and animal health.
World Organisation for Animal Health (WOAH) – One Health – Standards and collaboration on animal and public health.
UN Environment Programme (UNEP) – One Health– Environmental dimensions of health and disease prevention.
One Health High-Level Expert Panel (OHHLEP) – Scientific advice supporting global One Health policy.
CDC – One Health– Practical examples and case studies of One Health in action.
DEFRA – One Health Approach (UK)– UK policy perspectives on integrated health management.
European Commission – One Health Action Plan – EU-level initiatives addressing antimicrobial resistance and disease.
CABI – One Health Resources – Research and educational materials connecting agriculture and health.
Learn the meaning of more essential agricultural terms with our easy-to-use Key Terms Glossary here
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