Global health experts advocate for a more nuanced understanding of obesity that accounts for overall health conditions rather than solely relying on BMI metrics. The report proposes new classifications that aim to provide more tailored treatment approaches, potentially reshaping the management of obesity worldwide.
Experts Call for New Classification of Obesity to Guide Treatment Strategies

Experts Call for New Classification of Obesity to Guide Treatment Strategies
A global report asserts the need for a refined definition of obesity, emphasizing health status over BMI in diagnoses.
Obesity is often simplified to a body mass index (BMI) threshold, but a new report argues for a more nuanced approach to defining and treating the condition. This groundbreaking study, supported by over 50 global medical professionals, highlights the necessity of evaluating individuals not just on their weight, but on their overall health and any obesity-related complications they may be facing.
Key opinions in the report suggest that patients with complications directly caused by excess body fat should be marked as having 'clinical obesity.' In contrast, those carrying additional weight but remaining in good health could be classified as having 'pre-clinical obesity'. This distinction could prevent the over-diagnosis of patients and promote more appropriate healthcare responses.
Currently, the definition of obesity commonly applies a BMI threshold of over 30, a figure criticized for its ineffectiveness in providing a comprehensive health assessment. This metric does not differentiate between muscle mass and fat and overlooks distribution patterns of fat that are more harmful to health, such as visceral fat around the abdomen. Experts argue for alternative measures like waist-to-height ratios or direct fat evaluations, which can yield a clearer understanding of individuals' health.
Professor Francesco Rubino from King's College London, who led the group advocating for this change, notes that “obesity is a spectrum.” Many individuals with excess weight lead normal, active lives. Distinguishing between different types of obesity could lead to important changes in how both adults and children are treated.
Currently, access to effective weight-loss medications such as Wegovy and Mounjaro is often restricted to those meeting the clinical obesity criteria. The report expresses concern that the emphasis on drug treatment for only clinically obese patients could lead to insufficient care for those identified as pre-clinically obese, who may also benefit from early interventions.
The Royal College of Physicians welcomed the report, echoing its call for the healthcare system to treat obesity with the same attention as other chronic conditions. However, there are fears that financial constraints may limit the resources available for those with pre-clinical obesity, possibly channeling funding predominantly towards more severe cases.
Amid a growing reliance on weight-loss drugs that can facilitate substantial weight loss, experts agree that implementing these new definitions would enhance diagnostic accuracy and tailor strategies to meet the individual health needs of patients, ultimately fostering better outcomes in the management of obesity on a global scale.