Recent research has demonstrated high levels of dieting, food preoccupation and muscle preoccupation in preadolescent children. In children, these attitudes and behaviours can constitute health risks. The design of appropriate intervention programs relies on empirical identification of the relevant risk factors. The current study was designed to investigate low self-esteem, perceived parental relations, perceived peer relations, negative affect, perfectionism and BMI as predictors of dieting, food preoccupation and muscle preoccupation in 8 to 10 year old children, over a 10 month period. The results demonstrate the importance of perfectionism as a predictor of dieting and muscle preoccupation in preadolescent boys.<br /