Mental health is the number one issue among young Australians, with body image, stress and study problems among their biggest worries.
It's the first time mental health has topped the list of issues of national concern for young people in Mission Australia's annual Youth Survey, which began 16 years ago.
Mental health edged out alcohol and drugs as the most important concern for 15-to-19 year olds, with equity and discrimination the third biggest.
The number of young people who identified mental health as a national concern has more than doubled since 2015, when 15 per cent of respondents considered it an issue.
More girls than boys expressed concerns about mental health issues, while boys were more worried about drugs and alcohol.
Despite their worries, around two-thirds felt happy with their lives and positive about the future.
Australian readers seeking support and information about depression can contact Lifeline on 13 11 14.