People with obesity 70% more likely to be hospitalised by or die from infection, study finds

Researchers presented a major global health study at the European Congress on Obesity in Venice this week, revealing that individuals living with obesity are 70% more likely to be hospitalized or die from infectious diseases compared to those with a healthy weight. The comprehensive analysis, which examined data across several decades, was conducted to understand the long-term impact of body mass index on immune system resilience against common pathogens. The findings highlight a critical vulnerability in the global population, as excessive weight appears to significantly impair the body's ability to combat a wide range of bacterial and viral threats. The study underscores that being an unhealthy weight is no longer just a risk factor for chronic conditions like diabetes or heart disease, but a primary driver of acute medical crises. According to the research, one in 10 infection-related deaths worldwide can now be linked directly to obesity. This correlation spans a variety of serious illnesses, including seasonal influenza, pneumonia, and other respiratory tract infections. The physiological strain of carrying excess weight, combined with potential underlying inflammation, often complicates clinical outcomes and slows recovery times for patients admitted to intensive care units. Medical experts involved in the study emphasized that the implications for public health policy are profound, especially in the wake of lessons learned from recent global pandemics. The data suggest that the immune response in individuals with a high BMI is often compromised, leading to more aggressive disease progression. By identifying obesity as a major determinant in infectious disease mortality, the researchers hope to encourage healthcare providers to prioritize weight management as a preventive measure against both seasonal outbreaks and future health emergencies.