Depression affects women far more often than men, and in the US 26.4% of females report mental illness versus 19.1% of males in 2021. Even more startling, serious mental illness impacts 5.5% of US adults, yet those groups face outcomes like a 25 year shorter average lifespan. Together with global totals of 970 million people living with mental disorders in 2019, the pattern gets harder to ignore when you see how closely diagnoses, treatment gaps, and economic cost intertwine.
Key Takeaways
- Women are twice as likely as men to be diagnosed with depression globally.
- In the US, mental illness prevalence is higher among females (26.4%) than males (19.1%) in 2021.
- Adolescents aged 18-25 have the highest prevalence of any mental illness at 36.2% in the US.
- Mental disorders cause $1 trillion in lost productivity globally per year.
- In the US, mental illness costs $193 billion annually in lost earnings.
- Depression alone leads to 12 billion lost workdays yearly worldwide.
- Suicide rates among people with mental disorders are 20x higher than general population.
- Mental disorders account for 13% of global disease burden (DALYs).
- US adults with SMI die 25 years earlier on average.
- Globally, approximately 970 million people were living with a mental disorder in 2019, with anxiety affecting 301 million and depression 280 million individuals.
- In the United States, 22.8% of adults (57.8 million people) experienced any mental illness in 2021.
- Serious mental illness affected 5.5% of U.S. adults (14.1 million) in 2021, defined as causing serious functional impairment.
- Childhood trauma increases adult depression risk by 2.5-4x.
- Genetic factors account for 40-50% heritability of bipolar disorder.
- Adverse childhood experiences (ACEs) increase depression risk by 3-5x.
Around 970 million people worldwide live with mental disorders, costing economies trillions each year.
Related reading
01 · Category
Demographic Variations26 stats
01
Women are twice as likely as men to be diagnosed with depression globally.
02
In the US, mental illness prevalence is higher among females (26.4%) than males (19.1%) in 2021.
03
Adolescents aged 18-25 have the highest prevalence of any mental illness at 36.2% in the US.
04
Among US adults, AIAN (American Indian/Alaska Native) have the highest SMI rate at 8.4%.
05
Lifetime PTSD prevalence is 8% in women vs. 2% in men in the US.
06
In the UK, men aged 16-24 have 26.9% prevalence of common mental disorders.
07
Elderly (65+) have 14% prevalence of mental disorders globally, higher in high-income countries.
08
Black adults in US report lower mental illness rates (16.8%) than White adults (23.1%).
09
Children in low-income families have 2x higher risk of mental disorders.
10
LGBTQ+ youth are 4x more likely to attempt suicide than straight peers.
11
Rural US adults have higher depression rates (25%) than urban (21%).
12
Immigrants have lower mental disorder rates initially but increase over time.
13
In Australia, males have higher schizophrenia rates (1.4x females).
14
US veterans have PTSD prevalence of 7% (11-20% for Iraq/Afghanistan).
15
Women in developing countries face 50% higher anxiety disorder rates.
16
College students have 44% prevalence of anxiety disorders.
17
Hispanic US adults have lower SMI (4.6%) vs. White (6.2%).
18
Peak onset of schizophrenia is late teens to mid-20s for men, late 20s for women.
19
Divorced individuals have 2.4x higher depression risk than married.
20
In Canada, Indigenous peoples have 3x higher mood disorder rates.
21
Unemployment triples risk of depression onset.
22
Urban dwellers have 21% higher psychosis risk (dose-response with city size).
23
Low SES children have 20-40% higher conduct disorder rates.
24
Asian Americans report lowest mental illness (15.8%) in US.
25
Females aged 16-24 in England have 37.9% anxiety prevalence.
26
Prisoners have 3-4x higher psychosis rates than general population.
Interpretation
Demographic Variations Interpretation
Across regions, demographic differences are striking, with depression diagnosed at about twice the rate in women as in men globally and the highest overall mental illness prevalence in the US among young adults aged 18 to 25 at 36.2%.
03 · Category
Mortality And Comorbidity29 stats
01
Suicide rates among people with mental disorders are 20x higher than general population.
02
Mental disorders account for 13% of global disease burden (DALYs).
03
US adults with SMI die 25 years earlier on average.
04
80% of 800,000 annual global suicides linked to mental disorders.
05
Depression increases cardiovascular mortality by 50%.
06
Schizophrenia shortens life by 15-20 years.
07
50% of homeless deaths linked to untreated mental illness.
08
Anxiety disorders comorbid with 60% of depression cases.
09
Bipolar disorder mortality risk 2-3x higher from natural causes.
10
PTSD increases all-cause mortality by 40%.
11
70% of schizophrenia patients have substance use comorbidity.
12
Dementia doubles fall risk, leading to 30% mortality post-hip fracture.
13
ADHD adults have 2x traffic fatality risk.
14
Borderline PD has 10% lifetime suicide rate.
15
Depression comorbid in 45% of cancer patients.
16
SMI patients 3x more likely to die from preventable diseases.
17
OCD linked to 2x cardiovascular disease risk.
18
40% of HIV patients have untreated depression, worsening prognosis.
19
Autism adults have 2.5x higher epilepsy comorbidity.
20
Anorexia nervosa has 5-10% mortality rate.
21
Alcohol use disorder shortens life by 24 years.
22
25% of stroke survivors develop depression, increasing mortality 2x.
23
Psychosis comorbidity in 20% of bipolar, raising suicide risk 10x.
24
Chronic pain comorbid with depression in 30-50% cases.
25
SMI reduces cancer survival by 30% due to disparities.
26
60% of opioid overdose deaths involve mental disorders.
27
Parkinson's patients have 50% depression rate, linked to faster progression.
28
Conduct disorder in youth predicts 50% adult criminality and mortality.
29
Untreated sleep disorders increase schizophrenia relapse mortality.
Interpretation
Mortality And Comorbidity Interpretation
Across the mortality and comorbidity landscape, people with mental disorders experience drastically higher premature death and suicide, with US adults with SMI dying 25 years earlier and suicide rates 20 times higher than the general population, while conditions like depression add a further 50% increase in cardiovascular mortality.
More related reading
04 · Category
Prevalence And Incidence30 stats
01
Globally, approximately 970 million people were living with a mental disorder in 2019, with anxiety affecting 301 million and depression 280 million individuals.
02
In the United States, 22.8% of adults (57.8 million people) experienced any mental illness in 2021.
03
Serious mental illness affected 5.5% of U.S. adults (14.1 million) in 2021, defined as causing serious functional impairment.
04
Worldwide, bipolar disorder prevalence is estimated at 40-45 million people, or about 0.53% of the global population.
05
Schizophrenia affects approximately 24 million people globally, or 1 in 300 individuals aged 10-49 years.
06
In Europe, the lifetime prevalence of any mental disorder is around 38.4% according to the World Mental Health Surveys.
07
Post-traumatic stress disorder (PTSD) has a global lifetime prevalence of about 3.9-5.6%.
08
In low- and middle-income countries, the prevalence of common mental disorders is 10.7%.
09
Autism spectrum disorder prevalence is 1 in 100 children worldwide, per WHO estimates.
10
Eating disorders affect 9% of the global population at some point in their lives.
11
In Australia, 42.9% of people will experience a mental disorder in their lifetime.
12
UK lifetime prevalence of mental illness is 43% for anxiety disorders alone.
13
In India, 10.6% prevalence of common mental disorders in community settings.
14
Global incidence of depression increased by 25% during the first year of COVID-19.
15
ADHD affects 5.9% of youth aged 5-19 worldwide.
16
In the US, 1 in 6 children aged 6-17 experience a mental health disorder each year.
17
Dementia prevalence is 55 million people globally, projected to triple by 2050.
18
Obsessive-compulsive disorder (OCD) lifetime prevalence is 2.5% worldwide.
19
In Brazil, 9.3% prevalence of any mental disorder in the past year.
20
Personality disorders have a global prevalence of 6-10%.
21
In Canada, 18.3% of the population aged 15+ reported symptoms consistent with a mood or anxiety disorder in 2021.
22
Global prevalence of anxiety disorders is 4% (301 million people in 2019).
23
Substance use disorders affect 100 million people globally.
24
In South Africa, 30% lifetime prevalence of common mental disorders.
25
US youth (ages 12-17) with major depression: 20.1% had severe impairment.
26
Global point prevalence of psychotic disorders is 0.5%.
27
In Japan, 6.7% prevalence of mood disorders.
28
Lifetime prevalence of any DSM-IV disorder is 47.4% in the US.
29
In Nigeria, 12.3% prevalence of any mental disorder.
30
Global prevalence of disruptive behavior disorders in children is 5-10%.
Interpretation
Prevalence And Incidence Interpretation
In 2019, about 970 million people worldwide were living with a mental disorder, and the high shares reported in later snapshots such as 22.8% of US adults in 2021 show that prevalence remains widespread across time and regions.
05 · Category
Risk Factors24 stats
01
Childhood trauma increases adult depression risk by 2.5-4x.
02
Genetic factors account for 40-50% heritability of bipolar disorder.
03
Adverse childhood experiences (ACEs) increase depression risk by 3-5x.
04
Cannabis use before 18 doubles psychosis risk.
05
Chronic stress elevates cortisol, increasing anxiety disorder risk by 2x.
06
Parental mental illness raises child risk 2-6x depending on disorder.
07
Obesity increases depression risk by 55%.
08
Sleep disturbances precede 40% of mood disorder episodes.
09
Social isolation triples depression risk in elderly.
10
Childhood bullying increases adult mental disorder risk by 2.5x.
11
Heavy alcohol use disorder risk is 3x higher with genetic predisposition.
12
Urban upbringing increases schizophrenia risk by 40%.
13
Perinatal complications raise autism risk by 1.5-2x.
14
Low omega-3 intake linked to 25% higher depression risk.
15
Migration increases psychosis risk 2-5x in first generation.
16
Head injury increases dementia risk by 2x.
17
Smoking doubles anxiety disorder risk.
18
Poverty in childhood raises schizophrenia risk by 2x.
19
Antenatal depression in mother increases child behavioral disorder risk 1.5x.
20
Lead exposure in childhood linked to 2.5x ADHD risk.
21
60% of suicide attempts linked to untreated mental disorders.
22
Shift work disrupts circadian rhythm, raising mood disorder risk 40%.
23
85% of PTSD cases triggered by trauma exposure.
24
40% of anorexia risk from genetics, 60% environmental.
Interpretation
Risk Factors Interpretation
Across these risk factor indicators, early and ongoing exposures are strongly linked to later mental health, with childhood trauma and ACEs raising depression risk by about 2.5 to 5 times and early cannabis use doubling psychosis risk.
06 · Category
Treatment And Intervention29 stats
01
Only 28% of people with depression in US receive treatment.
02
Antidepressants effective for 40-60% of major depression cases as first-line.
03
Cognitive Behavioral Therapy (CBT) remission rate 50% for anxiety disorders.
04
In the US, 37.9% of adults with AMI received treatment in 2021.
05
Electroconvulsive therapy (ECT) has 70-90% efficacy for severe depression.
06
50% of schizophrenia patients on antipsychotics relapse within 1 year without adherence.
07
Mindfulness-Based Stress Reduction reduces anxiety by 38% in meta-analyses.
08
In low-income countries, treatment gap for psychosis is 75%.
09
SSRI antidepressants take 4-6 weeks for full effect in 60% of patients.
10
Dialectical Behavior Therapy (DBT) reduces suicide attempts by 50% in BPD.
11
Telepsychiatry increased access by 300% during COVID-19.
12
20% of US children with mental disorders receive any treatment.
13
Lithium reduces suicide risk by 80% in bipolar disorder.
14
Group therapy as effective as individual for social anxiety (65% response).
15
In Europe, 50% treatment coverage for depression.
16
TMS (Transcranial Magnetic Stimulation) 50% response rate for treatment-resistant depression.
17
Medication adherence in bipolar is only 50% after 6 months.
18
Psychedelic-assisted therapy shows 70% remission in PTSD trials.
19
School-based mental health programs reach 25% more youth.
20
65% of OCD patients improve with ERP (Exposure Response Prevention).
21
In Australia, 35% of those with mental illness access services annually.
22
Ketamine infusions provide relief in 70% of TRD patients within hours.
23
Peer support doubles recovery rates in SMI.
24
45% of ADHD adults untreated despite diagnosis.
25
Family therapy reduces relapse in schizophrenia by 50%.
26
Internet-based CBT as effective as face-to-face (60% efficacy).
27
In UK, IAPT services achieve 50% recovery rate for anxiety/depression.
28
Antipsychotic polypharmacy in 30% of schizophrenia cases, linked to poorer outcomes.
29
Yoga reduces PTSD symptoms by 30% in veterans.
Interpretation
Treatment And Intervention Interpretation
Despite a range of effective options, only 28% of people with depression and 37.9% of adults with AMI receive treatment, while therapies like CBT reach about 50% remission for anxiety and ECT shows 70 to 90% efficacy for severe depression.
report visual · Comparison
Mental illness prevalence varies by group
In the U.S., prevalence is higher for females than males, and lower for Black adults than White adults.
Adolescents aged 18-25 have the highest prevalence of any mental illness at 36.2% in the US.36.2%
In the US, mental illness prevalence is higher among females (26.4%) than males (19.1%) in 2021.
26.4%
Black adults in US report lower mental illness rates (16.8%) than White adults (23.1%).
16.8%
Reference
Cite This Report
This report is designed to be cited. We maintain stable URLs and versioned verification dates. Copy the format appropriate for your publication below.
APA
Alexander Schmidt. (2026, February 13). Mental Disorder Statistics. Gitnux. https://gitnux.org/mental-disorder-statistics
MLA
Alexander Schmidt. "Mental Disorder Statistics." Gitnux, 13 Feb 2026, https://gitnux.org/mental-disorder-statistics.
Chicago
Alexander Schmidt. 2026. "Mental Disorder Statistics." Gitnux. https://gitnux.org/mental-disorder-statistics.
Sources & references
31 datasets cited across this report