A new analysis finds that children who eat healthfully are more likely to be happy, and those who are happy are more likely to eat healthfully. Interestingly, these links were independent of weight. Childhood overweight and obesity is a growing problem in the United States and elsewhere. Around 1 in 3 U.S. children and teenagers are overweight or obese. Levels have, worryingly, tripled since the 1970s. Being overweight often goes with a number of health problems, but it also has psychological effects. Children who are overweight are more prone to low self-esteem, negative body image, and depression. Due to the size of this issue, much research is focused on trying to understand the psychology behind becoming overweight, as well as on the impact of being overweight on children’s psychological well-being. One such study is the Identification and Prevention of Dietary and Lifestyle Induced Health Effects in Children and Infants Study. This prospective cohort study was set up with the aim of preventing obesity in children and understanding the factors that contribute to it.