Depression and obesity are among the most prevalent and interconnected public health challenges worldwide, yet little is known about how their co-occurrence varies across countries and changes over time. A new study published in General Psychiatry sought to address this gap through a comprehensive global assessment of depression–obesity comorbidity across 199 countries and territories. By integrating data from the Global Burden of Disease Study 2023, the NCD Risk Factor Collaboration and the World Bank, the researchers mapped geographic patterns, quantified long-term trends and projected the future burden of co-occurring depression and obesity.
The analysis revealed striking regional disparities in both the prevalence and growth of depression–obesity comorbidity. Countries in Central, East and Southeast Asia were more likely to exhibit consistently low prevalence, whereas countries in the Americas, West Asia and North Africa were more commonly characterised by high prevalence. Despite relatively low current rates, many countries in East Asia, Southeast Asia and sub-Saharan Africa experienced some of the fastest increases in comorbidity over time, highlighting emerging public health challenges in these regions. The researchers estimated that the global prevalence of depression–obesity comorbidity has been increasing steadily since 1990, with a median annual percentage increase of 4.66%.
To better understand future trends, the study employed autoregressive integrated moving average modelling to forecast prevalence through 2035. Results suggested that the median prevalence of depression–obesity comorbidity could rise from approximately 833 cases per 100,000 population in 2030 to 869 cases per 100,000 population by 2035. The burden was projected to remain particularly high in Oceania and middle-SDI regions, indicating that the coexistence of mental and metabolic disorders is likely to become an increasingly important global health concern in the coming decade.
Importantly, the study demonstrated that socioeconomic conditions and healthcare resources were closely linked to comorbidity trajectories. Countries experiencing obesity-driven or rapid dual increases in depression and obesity generally had lower socioeconomic development, fewer hospital beds, lower national income and higher rates of undernourishment than countries with slower growth patterns. These findings suggest that structural inequalities may contribute substantially to the rising burden of depression–obesity comorbidity and may limit the capacity of healthcare systems to respond effectively.
“Depression–obesity comorbidity has become increasingly prevalent, and both co‐occurrence and growth patterns vary by region and socioeconomic context,” the authors concluded. They emphasise that countries with currently low prevalence but rapidly rising trends require early preventive action, while high-prevalence regions need sustained investment in treatment and support services. The researchers argue that integrated strategies addressing both mental health and obesity, including stigma reduction, healthier food environments, expanded mental healthcare access and promotion of physical activity, will be essential to curb the growing burden of this comorbidity worldwide.
The study highlights the importance of viewing depression and obesity not as isolated conditions but as interconnected public health challenges shaped by broader social and economic contexts. By identifying regions at greatest risk and projecting future trajectories, the research provides an important evidence base for developing targeted, accessible and culturally appropriate interventions aimed at reducing the global burden of depression–obesity comorbidity.
General Psychiatry
Observational study
Depression meets obesity: Co-occurrence patterns, temporal trends and socioeconomic correlates across 199 countries and territories
12-Jun-2026