World Obesity Day is a unified day of action that calls for a cohesive, cross-sector response to the obesity crisis and takes place on 4 March and is convened by the World Obesity Federation in collaboration with its global members.

Since 2015, World Obesity Days have encouraged people to recognise the root causes of obesity, increase knowledge of the disease, tackle weight stigma, foreground the voices of people with lived experience and act to improve the world’s understanding, prevention and treatment of obesity.