Mental health refers to an individual's emotional and psychological well-being and their ability to function in everyday life. Approximately 450 million people worldwide suffer from mental or behavioral disorders. The causes of mental illness are complex and involve biological, genetic, psychological, and environmental factors interacting in various ways. Some key facts about mental health in Nepal are that around 10% of Nepalis suffer from a mental illness, facilities are limited especially outside of Kathmandu, and prevention efforts should target risk factors early through universal and selective interventions.