International Study Reveals BMI Alone Insufficient for Accurate Obesity Diagnosis
An international study, published in Nature, involving 844,108 adults from China, the UK, the United States, and Spain, has found that Body Mass Index (BMI) alone is an inadequate measure for diagnosing obesity. Researchers from King's College London and an international team concluded that BMI can both overestimate and underestimate obesity, failing to differentiate between individuals with existing health problems due to excess body fat and those at increased risk without organ dysfunction. The study supports a new framework proposed in January 2025 by The Lancet Diabetes & Endocrinology, which suggests categorizing obesity into 'clinical obesity' (where excess body fat impairs organ function) and 'preclinical obesity' (where excess body fat increases health risks but bodily function is preserved). The analysis showed that BMI alone missed obesity-level body fat in up to 8.6% of participants and incorrectly classified up to 3.1% as obese. Incorporating waist circumference and waist-to-height ratio signif...
