Mental Health
Roughly one in eight people lives with a mental disorder. Depression and anxiety together cost the global economy about $1 trillion a year in lost productivity, yet low and middle-income countries spend less than 2% of their health budgets on mental health and the global treatment gap exceeds 70% for severe conditions.
Key insights
Depression and anxiety dominate the burden
Of 970 million people with mental disorders, 280 million live with depression and 301 million with an anxiety disorder. Bipolar disorder affects 40 million; schizophrenia 24 million; eating disorders 14 million. Women experience higher rates of depression and anxiety; men show higher rates of substance-use disorders.
Spending nowhere near burden
Mental health accounts for 13% of global disease burden (DALYs) but less than 2% of government health spending in low-income countries and roughly 5% in high-income countries. The WHO Mental Health Atlas 2024 finds median spending of $2 per capita in low-income countries versus $115 in high-income countries — a 50× gap.
Suicide remains a leading cause of death in young adults
Roughly 720,000 people die by suicide each year — more than from war, homicide and natural disaster combined. Suicide is the fourth-leading cause of death among 15–29 year olds globally. Rates have fallen 36% since 2000 in WHO European and Western Pacific regions but risen in the Americas, where the US rate climbed 30% from 2000.
Prevalence of mental disorders (2026)
Estimated people living with each disorder, millions
Key Finding: Anxiety and depression together affect 581 million people — nearly 60% of all mental-disorder cases.
Mental-health treatment gap by income group (2026)
% of people with severe disorder receiving any treatment
Key Finding: In low-income countries fewer than one in four people with a severe disorder receive any treatment; the gap halves but does not close in high-income settings.
Methodology & caveats
Prevalence vs incidence
Prevalence counts everyone living with a condition at a point in time. Incidence counts new cases over a period. For chronic disorders like depression, prevalence is the more commonly reported figure but can change due to better detection without any underlying rise in true illness.
DALYs explained
Disability-Adjusted Life Years combine years of life lost (from premature death) with years lived with disability (weighted by severity). Mental disorders rarely cause direct mortality but score high on disability weights, which is why they are the leading cause of years lived with disability in many countries.
Reporting limitations
Stigma, weak diagnostic infrastructure and varying definitions make cross-country comparisons hazardous. The IHME Global Burden of Disease study uses modelled estimates filling gaps where survey data is absent — confidence intervals can be wide, especially for low-income countries.