The Lancet Psychiatry Commission: transforming mental health implementation research
Effective mental health promotion, prevention, and treatment approaches exist but are not widely delivered at-scale to large groups or populations. Most people who could benefit from evidence-based mental health interventions—defined broadly to encompass policies, programmes, and individual-level practices or services—do not receive them. This implementation gap is sometimes termed a know–do gap1—we know what mental health interventions can work, but we often do not know how to do those interventions in real-world settings.