The Lancet Says Mental Disorders Are Now The World’s Leading Cause Of Disability, Teenagers Worst Affected

Mental health disorders have officially become the leading cause of disability worldwide, according to a major new global study published in The Lancet. Researchers say the findings highlight a growing international mental health crisis that has intensified sharply since the COVID-19 pandemic. The study found that nearly 1.2 billion people worldwide were living with at least one mental health disorder in 2023 - almost double the number recorded in 1990. Experts warn that rising anxiety, depression, emotional stress, and social isolation are now affecting millions of people across all age groups, with teenagers and young adults among the hardest hit.Also read: Childhood Cancer No Longer A Death Sentence - Survival Rates Reach 85% With Early Treatment

Anxiety and depression cases have soared since the pandemic

Researchers analysed data from 204 countries and found that mental health conditions increased dramatically after the COVID-19 pandemic. According to the study, major depressive disorder cases rose nearly 24 per cent since 2019, anxiety disorders increased more than 47 per cent, and mental disorders are now the largest contributor to global disability. The authors say the long-term emotional impact of the pandemic continues to affect people years later. Dr Damian Santomauro, associate professor at the Queensland Centre for Mental Health Research, said the increase may reflect both pandemic-related stress and broader social pressures. “These rising trends may reflect both the lingering effects of pandemic-related stress and longer-term structural drivers such as poverty, insecurity, abuse, violence, and declining social connectedness,” he explained.

Teenagers and young adults face the highest mental health burden

One of the study’s most concerning findings was that mental disorder burden appears to peak between ages 15 and 19. Experts warn that this developmental stage is critical because mental health problems during adolescence can affect:

• Education
• Employment opportunities
• Relationships
• Long-term physical health
• Social development

Researchers say early mental health intervention during the teenage years may significantly improve long-term outcomes.

Women disproportionately affected

The study also found that women are experiencing a disproportionately higher mental health burden globally. Experts say this may be linked to caregiving pressures, gender inequality, workplace stress, financial insecurity, and higher rates of abuse and violence. Doctors say women are more likely to experience anxiety and depression, especially during periods of chronic stress and social pressure.

Why do mental health disorders cause disability?

Mental health disorders may not always cause visible physical symptoms, but doctors say they can severely affect daily functioning and quality of life. Conditions such as depression, anxiety, bipolar disorder, PTSD, and severe stress can interfere with sleep, concentration, work performance, social interaction, physical health, and emotional regulation. Experts warn that untreated mental illness may also increase the risk of substance abuse, self-harm, chronic disease, and suicide.

Experts call for greater mental health investment

Researchers say the findings highlight an urgent need for governments and healthcare systems to prioritise mental health services. Experts are calling for better access to therapy and counselling, more affordable mental healthcare, early screening programmes, increased mental health awareness, support for vulnerable populations, and school and workplace mental health initiatives. Doctors stress that mental health should be treated with the same seriousness as physical illness.

Mental health awareness is becoming increasingly important

Health experts say growing public awareness around emotional well-being is helping reduce stigma surrounding mental illness. However, many people still delay seeking help because of fear, social stigma, financial barriers, or lack of access to care. Researchers warn that without stronger mental health infrastructure and early intervention systems, the global burden of mental disorders may continue rising in the coming years.