and thus may not have been an accurate representation of adolescent family structure when the predictor and outcome measures for this analysis are were assessed. Our analyse are unable to rule out reverse causation in the observed associations. However, this limitation applies mainly to the outcome of disordered eating as reverse causation is unlikely with the other outcomes explored. All measures were collected by self-report and individuals with higher BMIs are more likely to under-report their weight and dietary intake and over-report their physical activi This reporting bias would most likely bias estimates towards the null. We calculated 42 tests and did not adjust for multiple comparisons.