DiscussionBetween 2001 and 2008, the prevalence of type 1 diabetes remained relatively stable, consistent with the findings of a recent report based on data from the National Diabetes Register of Australia , suggesting that the incidence of type 1 diabetes is increasing in children, but not in young adults (Australian Institute of Health and Welfare). In contrast, the prevalence of type 2 diabetes increased by 36% in the Australian adult population, consistent with previously reported trends in non-specific diabetes (Atlantis et al., 2009b). On average, the prevalence of type 1 and type 2 diabetes was 1.3 to 2.4 times higher among people with psychopathology, regardless of definition (psychological distress, antidepressants and/or anxiolytics) after adjustments for sociodemographic covariates. The lack of significant interaction between surveys implies that the increased risk of type 1 and type 2 diabetes among those with psychopathology was constant over the 8-year period. Furthermore, the increased risk of diabetes, particularly type 2 diabetes, was partly explained by unhealthy lifestyle behaviors, supporting the findings and interpretations of previous prospective cohort studies (Atlantis et al., 2010; Chiu et al., 2010; ). This suggests that effective lifestyle interventions could help alleviate the persistent excess burden of diabetes and comorbid psychopathology, and that people with type 2 diabetes will likely benefit more than those with type 1 diabetes. However, lifestyle interventions are difficult to implement in practice (Atlantis et al., 2009a). Trials are needed to inform policy and decision-making regarding the organization and delivery of multidisciplinary programs...... middle of article ......r to comprehensively evaluate the benefits and risks of effective interventions against comorbid psychopathology and diabetes. A comprehensive study of serial and representative population-based data sources shows that the prevalence of type 1 and type 2 diabetes was consistently higher among people with psychopathology from 2001 to 2008, which was partly explained by by unhealthy lifestyle behaviors, especially in people with type 2 diabetes. Effective lifestyle interventions could help alleviate the persistent excess burden of diabetes in people with comorbid psychopathology, but they are difficult to implement in practice. Trials are needed to inform policy and decision-making regarding the organization and delivery of multidisciplinary interventions for psychopathology, diabetes and unhealthy lifestyle behaviors..