Calls to the mental health line SANE increased by more than a quarter with 10,000 Australians contacting the service for advice in the past year.
Calls rose 27 per cent in the year from July 2011 to June 2012, compared with the same period the previous year.
More women contacted the helpline than men while a third were asking about community support and a third were inquiring about treatment options.
An analysis of the helpline's statistics has shown almost half the inquiries were from people concerned about the mental health of their friends, relatives or someone they cared for.
SANE Australia chief executive Jack Heath said about one in five calls were related to undiagnosed symptoms, with people often making the first step of contacting a doctor for help.
Others require help navigating the healthcare system or need financial or legal advice.