It is estimated that 5% of adults suffer from depression. One in seven 10- to 19-year-olds experience a mental health disorder. Scaling up treatment for depression and anxiety provides a benefit–cost ratio of 5 to 1 and a broadly defined set of mental health conditions cost the world economy approximately $2.5 trillion in 2010. This is projected to rise to $6 trillion by 2030, which is more than the researchers projected for the costs of cancer, diabetes and chronic respiratory disease combined. Costs range from $1,180 to $18,313 per treated person, depending on the condition, which include both direct costs of treatment and other services as well as other costs such as lost production and income.
Depression is a leading cause of disability worldwide.