Prevalence and impact of mental illness Print this page

Prevalence and impact of mental illness Print this page

1 in 7 children and adolescents

Mental health is a key component of overall health and wellbeing (WHO 2021). A mental illness can be defined as ‘a clinically diagnosable disorder that significantly interferes with a person’s cognitive, emotional or social abilities’ (COAG Health Council 2017). However, a person does not need to meet the criteria for a mental illness or mental disorder to be negatively affected by their mental health (COAG Health Council 2017; Slade et al. 2009).

On this page, the terms ‘mental illness’ and ‘mental disorder’ are both used to describe a range of mental health and behavioural disorders, which can vary in both severity and duration. Continue reading