Evidence has been growing that the consumption of sugary drinks among children is contributing to our increasing rates of overweight and obesity. Sugary drinks include ones artificially sweetened with sugar, such as soft drinks and energy drinks, but also seemingly healthy drinks, such as fruit juice. Sugary drinks are sometimes described as offering ‘empty kilojoules’ because they provide plenty of calories but lack many essential nutrients. Two recent studies into the effect sugary drink consumption has on children's weight, add to a growing body of evidence linking them to weight gain. A recent issue of the New England Journal of Medicine (NEJM) reported on both studies.