title: Mental illness starts early in life, but treatment often begins decades later.
mesh_terms: D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D017668:Age of Onset; D006301:Health Services Needs and Demand / Q000639:trends; D006801:Humans; D001523:Mental Disorders / Q000453:epidemiology* / Q000628:therapy; D008605:Mental Health Services / Q000706:statistics & numerical data*; D009315:National Institute of Mental Health (U.S.); D010342:Patient Acceptance of Health Care; D014481:United States / Q000453:epidemiology