F135. BODY MASS INDEX TRAJECTORIES IN CHILDHOOD AND RISK FOR NON-AFFECTIVE PSYCHOSIS – A GENERAL POPULATION COHORT STUDY

Abstract

Background: It is well known that underweight in adolescence and early adulthood predicts later schizophrenia.1 Some studies have shown an association between future schizophrenia or psychosis and underweight in children, starting at the age of 7.2 There are very few previous studies concerning underweight in early childhood and the risk of psychosis as well as other psychiatric outcomes. Our aim was to study whether deviation from normal weight, i.e. underweight or overweight, in early childhood and adolescence predicts later development of non-affective psychosis. And if so, whether the mechanism is specific to psychosis or also predicts other psychiatric disorders. Method(s): The participants were derived from a general population cohort study 'Cardiovascular Risk of Young Finns', which was started in 1980 with 3596 children and adolescents participating from six different age groups (3-18 years), with a continued follow-up. BMI was recorded before the first hospitalization due to a psychiatric disorder (