This document summarizes the online discussion Are there any successful policies and programmes to fight overweight and obesity? which was held on FAO’s Global Forum on Food Security and Nutrition (FSN Forum) from 14 June to 7 July 2016. The discussion was facilitated by Francisca Silva Torrealba from the Catholic University of Chile and Rodrigo Vásquez Panizza from FAO Chile. The aim of the discussion was to gather additional input for the Study of international evidence of obesity reduction: l essons learned from case studies conducted by FAO and the Catholic University of Chile, in consultation with WHO. Participants were asked to share information on initiatives aiming to reduce overweight and obesity and to elaborate on their impact. In addition, the discussion included a general question on which elements are needed for a policy to be effective, and participants themselves also shared suggestions on how the problems of overweight and obesity should be addressed.