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Declaration for World Obesity Day

March 4, 2020

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We, the signatories to this Declaration, urgently request that national and local governments work to understand the ROOTS of obesity and use them to take more effective action on this disease.

Every government in the world has committed to international targets to address obesity – a chronic disease affecting over 650 million adults and 125 million children and youth worldwide. The targets include a zero increase in obesity prevalence between 2010 and 2025. Despite this commitment, not a single country is on track to meet this goal.

There is no excuse for this inaction. People with obesity require respectful and equitable access to treatment and clinical management services. Those at risk require equitable opportunities for obesity prevention. These actions require systematic, multi-sectoral policy action by each government that recognises and addresses the underlying ROOTS of obesity:

Recognise officially that obesity is a chronic, multifactorial disease as well as a driver of other diseases, with serious implications for individuals, families, societies and economies.

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Obesity monitoring and surveillance, and innovative research into the causes and effective strategies for preventing and treating obesity, must be vigorously promoted and supported.

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Obesity prevention strategies must be developed, tested and implemented across the life course, from pre-conception, through childhood, and into older age.

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Treatment of obesity, using evidence-based, dignified, non-stigmatising and person-centred approaches – including behavioural, pharmacological, digital, nutritional, physical-activity based and surgical interventions – should be accessible to all people with obesity.

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Systems-based approaches should be applied to the management of obesity, aimed at strengthening health systems, enabling obesity’s incorporation into primary and secondary care, and addressing the environmental, social and commercial roots of obesity.

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Finally, we call on governments and policymakers to join civil society organisations around the world in supporting and promoting 4 March as World Obesity Day, using this day each year as an opportunity to reinforce and recommit each year to greater collective action, to review progress against this Declaration, and to further raise awareness about this serious, chronic disease.

Sign the declaration below and download a copy of the declaration here.


  • Dr Mario K. Carra

    President, Associação Brasileira para o Estudo da Obesidade e Síndrome Metabólica (ABESO)

  • Professor Brian Oldfield

    President, Asia Oceania Association for the Study of Obesity (AOASO)

  • Dr Nathalie Farpour-Lambert

    President, European Association for the Study of Obesity (EASO)

  • Dr Félix Escano Polanco

    President, Federación Latinoamericana de Sociedades de Obesidad (FLASO)

  • Dr Víctor A. Saavedra

    Vice President, Federación Latinoamericana de Sociedades de Obesidad (FLASO)

  • Sir Trevor Hassell

    President, Healthy Caribbean Coalition

  • Andrew J.M. Boulton, MD, DSc (Hon), FACP, FICP, FRCP

    President, International Diabetes Federation

  • Takashi Kadowaki, MD, PhD

    Chairman of the Board of Directors, Japan Society for the Study of Obesity

  • Mr Joe Nadglowski, Jr

    President and CEO, Obesity Action Coalition (OAC)

  • Ms Dawn Hatanaka

    Executive Director, Obesity Canada

  • Ms Claudia Randall

    Executive Director, Obesity Medicine Association (OMA)

  • Sarah Le Brocq

    Director, Obesity UK

  • Professor Tess van der Merwe

    Chair, South African Society for Surgery, Obesity and Metabolism (SASSO)

  • Lee M. Kaplan, MD, PhD, TFOS

    2019–2020 President, The Obesity Society (TOS)

  • Dr Agbo Urudinachi

    President, The Obesity Society of Nigeria (TOSN)

  • Donna H. Ryan, MD

    President, World Obesity Federation


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Thank you for supporting the World Obesity Day declaration

If you would like to learn more about the roots of obesity from one, two or all of the World Obesity Day organising members, please click below:

You can find your national obesity society on the World Obesity Federation website.

Team World Obesity Day

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