Obesity Paradox

The obesity paradox is a surprising finding from medical research: in some groups of patients — particularly older adults and those with certain chronic diseases like heart failure — being overweight or mildly obese appears to be linked with better survival rates than being normal weight. This does NOT mean obesity is healthy; rather, it highlights how complex the relationship between weight and health truly is.

The obesity paradox refers to the epidemiological observation that, in certain patient populations with established chronic diseases (including heart failure, chronic kidney disease, and chronic obstructive pulmonary disease), individuals classified as overweight or Class I obesity (BMI 25-34.9 kg/m2) demonstrate lower all-cause mortality compared to normal-weight counterparts. Proposed explanations include metabolic reserve providing protection during catabolic illness, limitations of BMI as an adiposity measure, confounding by smoking and disease-related weight loss, and selection bias in observational cohorts.

The obesity paradox underscores the importance of looking beyond BMI alone when assessing health. At Accord Medical, Dr Joseph Wang approaches every patient holistically — using body composition analysis, metabolic markers, and individual health history to determine the safest and most effective weight management goals, rather than applying one-size-fits-all targets.