Are Australian cannabis users more likely to be diagnosed with or treated for mental illness, compared to those who do not use cannabis?

Australians (aged 18 years and older) who used cannabis in the past 12 months are more likely to have been diagnosed with or treated for a mental illness in the past year, compared to those who did not use cannabis (28% vs. 14%).

Source: Australian Institute of Health and Welfare (AIHW). 2016 National Drug Strategy Household Survey.