Australian Institute of Health & Welfare
The National Health Priority Areas Report on Mental Health defined mental health as:
‘the capacity of individuals and groups to interact with one another and the environment, in ways that promote subjective wellbeing, optimal development and the use of cognitive, affective and relational abilities’. A diverse range of social, environmental, biological and psychological factors can impact on an individual’s mental health. In turn, people can develop symptoms and behaviours that are distressing to themselves or others, and interfere with their social functioning and capacity to negotiate daily life. These symptoms and behaviours may require treatment or rehabilitation, even hospitalisation.