Many leading international obesity organisations, including EASO and ECPO, have agreed to support a new aligned World Obesity Day, taking place for the first time on 4 March 2020. EASO will join forces with Obesity Canada, the Obesity Society, the Obesity Action Coalition, Obesity Medicine Association, the Asia Oceania Association for the Study of Obesity, the Healthy Caribbean Coalition and World Obesity, to develop coordinated advocacy campaigns.