Introduction to the Book: Global Mental Health: Promotion and Prevention

Why is it necessary to write a whole book about Global Mental Health? Or to conclude, why is it necessary beside all other existing books (Springer 2016; Elsevier 2016)? Because the treatment of people with mental illness worldwide is until today not sufficient, in all countries; there is a significant gap between the prevalence of mental disorders and the number of people in all countries receiving adequate treatment and care (Mental Health Foundation UK 2015; WHO 2008).