Simon SL, et al. - In preschool-age children with obesity, researchers analyzed changes in sleep after a family-based weight-management intervention (Learning about Activity and Understanding Nutrition for Child Health) vs motivational interviewing and standard care conditions, as well as explored connections between sleep and body mass index (BMI) z score (BMIz) and diet. For this analysis 151 children (4.6 ± 0.93 years) finished baseline (pretreatment) and posttreatment (week 24) assessments, including anthropometrics, 24-hour dietary recalls, and a 7-day sleep diary. Findings revealed that, between treatment groups from baseline to post-treatment, bedtime and sleep duration did not significantly differ. Earlier bedtime was linked to lower BMIz, intake of added sugars, and sweet/dessert food servings at posttreatment, following adjustment for baseline sleep. Adjusting for baseline sleep, longer night-time sleep duration was linked to less added sugars at posttreatment. In order to promote positive changes for pre-schoolers with obesity, more comprehensive sleep intervention along with weight management intervention may be needed. Due to the connections between sleep duration and bedtime with BMIz and dietary intake, emphasis on earlier bedtime and longer sleep duration could be important.