Nearly 1.2 billion people worldwide are living with mental disorders. The number has been growing

Nearly 1.2 Billion People Worldwide Are Living With Mental Disorders

Nearly 1 2 billion people worldwide – A new study published in *The Lancet* reveals that nearly 1.2 billion individuals globally experienced mental disorders in 2023, marking a 95.5% surge in prevalence since 1990. The findings highlight a growing trend across 204 countries and territories, with mental health challenges intensifying due to complex interplay between age, sex, location, and sociodemographic factors. The authors warn that this trajectory signals a transition into a more alarming phase of global mental health decline, emphasizing the urgent need for coordinated efforts to address the issue.

The Most Common Disorders and Their Growth

According to the research, anxiety and depression accounted for the highest number of cases in 2023, followed by a category encompassing personality disorders that do not co-occur with other mental or substance-related conditions. The study also documented substantial increases in all 12 disorders examined, including a staggering 158% rise in anxiety and a 131% growth in depression compared to 1990. While these conditions dominate in prevalence, others such as anorexia, bulimia, and schizophrenia, though less frequent, still affected millions—approximately 4 million, 14 million, and 26 million cases, respectively.

Dysthymia, classified as a chronic but mild form of depression, and conduct disorder, which involves persistent disobedient and aggressive behaviors in children and adolescents, also showed notable growth. The study’s comprehensive analysis of data from the 2023 Global Burden of Diseases, Injuries, and Risk Factors Study (GBD) provided insights into how these conditions vary across populations and demographics.

Key Insights from the Lead Author

“The scale of the increase was unexpected,” said Dr. Damian Santomauro, the study’s first and lead author, in an email. “There are multiple factors influencing this trend, and isolating them is challenging.”

Santomauro, an associate professor at the University of Queensland’s School of Public Health, highlighted the importance of addressing risk factors through global leadership. He noted that while the pandemic has intensified mental health issues, the underlying trends were already accelerating before the crisis. “The burden of mental disorders has been rising steadily over the past three decades,” he explained. “This study underscores the need for sustained investment and policy action.”

Dr. Paul Bolton, a senior scientist at the Johns Hopkins Bloomberg School of Public Health, added that the estimates, though imperfect, represent the best available data. “Underreporting remains a persistent challenge, but these figures give us a clearer picture of the global mental health landscape,” he said via email. “They are as close to the true numbers as we can currently achieve.”

The Pandemic’s Role in Shaping Trends

The researchers identified the Covid-19 pandemic as a pivotal factor in exacerbating mental health challenges. While anxiety rates peaked during the pandemic and remained elevated in 2023, depression levels surged further and have not yet returned to pre-pandemic levels. “The pandemic disrupted routines and social structures, amplifying existing stressors,” said Dr. Robert Trestman, chair of psychiatry and behavioral medicine at the Virginia Tech Carilion School of Medicine. “This disruption has had lasting effects on mental well-being.”

Trestman, who was not involved in the study, pointed out that the younger age group—particularly those aged 15 to 19—now faces a higher mental disorder burden than any previous decade in the GBD study’s history. “This demographic is critical for brain and social development,” he noted. “Interrupted growth during this period can lead to long-term consequences.”

Global Efforts and the GBD Study’s Impact

Conducted by the Institute for Health Metrics and Evaluation at the University of Washington, the GBD study is the largest and most detailed initiative to assess health trends over time and geography. Launched in the early 1990s, the project has relied on contributions from thousands of researchers worldwide and has been primarily supported by the Gates Foundation since 2007. Its data now inform critical policy decisions and public health strategies.

The study’s findings reveal that mental disorders are increasingly becoming a primary cause of disability. Females, as well as individuals aged 15 to 39, are disproportionately affected, though some conditions like autism, ADHD, conduct disorders, personality disorders, and developmental intellectual disabilities show a stronger presence in males. “This shift in gender distribution is significant,” said Santomauro. “It reflects changes in societal pressures and biological factors.”

Looking Ahead: Challenges and Opportunities

Experts stress that the rising rates of mental disorders are not solely attributable to the pandemic. Long-standing issues such as economic instability, urbanization, and shifting social norms have also played a role. “The stigma surrounding mental illness has lessened, allowing more people to seek help,” remarked Trestman. “This openness is a positive development, but it must be paired with tangible solutions.”

Despite the challenges, the study offers hope through its global scope. By analyzing data across diverse regions, it provides a roadmap for targeted interventions. “The GBD study is a powerful tool for identifying disparities and prioritizing resources,” said Bolton. “It’s a reminder that mental health is a universal concern requiring collective action.”

As the world grapples with the dual threats of rising mental health needs and ongoing societal changes, the findings serve as a call to action. From early childhood to adulthood, the impact of these disorders is profound, necessitating a multi-faceted approach that includes education, accessibility to care, and cultural shifts. The path to wellness lies in understanding these trends and addressing them with urgency and precision.