In production: To contribute expertise, literature or an external reviewer please email Dr Peter Border 

Obesity is a global health concern with the worldwide prevalence more than doubling since 1980. In the UK, childhood obesity is a particular policy concern, with data from the National Child Measurement Programme showing that between 2006/07 and 2013/14 by year 6, there was a significant upward trend for both boys and girls in obesity and excess-weight with the trend being highest for girls.

This POSTnote will examine the evidence base for the links between such factors and obesity and assess its relevance to informing policy.