Of the 42.4% of the U.S. adult population that is obese (BMI > 30), 80% are metabolically sick (sick because they're obese), but 20% are metabolically healthy obese (MHO) and will live a normal lifespan without costing taxpayers money; conversely, 60% of the normal-weight population (BMI < 30) have the exact same metabolic diseases as obese individuals, demonstrating that obesity is a risk factor but not a cause of metabolic disease