Background: In health education, there is a risk of giving overly prescriptive recommendations, potentially activating conflicting in-group norms that reduce message receptiveness. For example, the notion of 'unhealthy youth' is a stereotype which suggests that young people are expected to make unhealthy choices. If such in-group norms are…

Adolescents with intellectual disabilities (ID) have an increased prevalence of being overweight and having cardiometabolic diseases as adults, in part due to poor eating habits with an inadequate intake of vegetables. The aim of this study was to evaluate whether a multifactorial school intervention using the "Plate Model" results in…