BRUSSELS / RankWire.AI / – In a significant public health report, Belgian research institute Sciensano indicated that an excessively high body mass index was responsible for 9,509 deaths in 2022. This figure represents 8.2 percent of all deaths in Belgium that year, with mortality occurring at a rate of more than one death per hour linked to weight-related health issues. By assessing population-wide BMI-related mortality for the first time, researchers estimated that health conditions connected to obesity led to over 150,000 years of life lost in total.

This extensive epidemiological study analyzed underlying causes of death to understand how increased body mass index contributes to chronic illnesses. The research pinpointed cardiovascular problems as the leading cause of death, with coronary heart diseases responsible for 2,009 fatalities. Neurodegenerative diseases, including Alzheimer disease and other forms of dementia, were the second most common, accounting for 1,652 deaths. Cerebrovascular disorders contributed to 1,171 deaths, while chronic kidney disease and various digestive cancers also played significant roles.
Data breakdowns by demographics demonstrate that the risk of death from high weight rises notably with age. The highest prevalence of weight-related health issues was observed among those aged 65 and older. Gender-specific analysis showed that male mortality rates were higher than female rates in most age groups. Nonetheless, women aged 85 and above showed greater total mortality, a pattern attributed by epidemiologists to longer life expectancy among females.
Weight-Related Deaths Predominantly Driven by Heart and Vascular Issues
Regional data across Belgium revealed significant disparities in death rates related to obesity. The southern part of Wallonia recorded the highest mortality, with 95.21 deaths per 100,000 inhabitants. The Brussels-Capital Region followed, with an age-standardized rate of 85 per 100,000 residents. Flanders reported the lowest impact, with 73.60 deaths per 100,000. Experts suggest these regional differences reflect variations in socioeconomic status, dietary habits, and healthcare availability across Belgium.
This data release coincides with policy reviews led by the Federal Public Service Health, which manages national health initiatives. Officials are using the insights to evaluate the long-term economic strain caused by chronic non-communicable diseases. The methodology employed by researchers involved calculating population attributable fractions for each health condition, establishing baseline estimates to inform future preventive strategies.
Dementia and Alzheimer Disease Account for Over 1,600 Deaths
At the European level, organizations like the European Centre for Disease Prevention and Control monitor similar metabolic risk factors to develop coordinated regional health policies. The Belgian findings align with broader EU health objectives aimed at decreasing premature mortality from non-communicable diseases. The World Health Organization’s international guidelines continue to advocate for integrated, multi-sectoral approaches that emphasize public awareness, nutritional labeling, and early clinical interventions.
These results provide a data-driven foundation for health authorities working to reduce the prevalence of high body mass index across Western Europe. By quantifying both mortality figures and years of life lost, policymakers can better allocate resources toward screening, preventive programs, and lifestyle modification efforts. As regions interpret this data, national health strategies are expected to prioritize early prevention to curb the ongoing rise in chronic diseases across the continent.