All levels of government have a role to play in population mental health.
Supportive physical and social environments are necessary for people's psychological and emotional well-being. These kinds of environments are largely shaped by health-promoting public policies.
Health promoting public policies are not just found in health; they are part of infrastructure and transportation, housing, social assistance, justice and public safety planning, etc.
Creating a mentally healthy society requires an integrated, multi-sectoral or "whole of society" approach. This approach includes community-based involvement, along with primary care, public health, social programs, employment, and education.