Children with attention-deficit/hyperactivity disorder (ADHD) are at elevated risk of a host of negative life outcomes, including both psychiatric and health complications.1 While the psychiatric complications are well established, the question of physical health outcomes is in need of clarification.1 As obesity becomes epidemic in our society, the question of whether ADHD, with its association of impulsivity, contributes to that risk, is salient.1 ,2 Dozens of studies have looked at this question, but with seemingly disparate results.2 Quantitative meta-analyses therefore are needed to clarify this association. The present authors have been leaders in this area so their assessment of the field is of considerable interest. To read the full article, log in using your NHS OpenAthens details