The study, published in the March issue of Archives of Surgery, showed that patients with a body mass index of 23 or lower were 40 percent more likely to die than patients with a BMI between 26 and 29. This data is supported by a recent study in the Journal of Cardiothoracic and Vascular Anesthesia, which found that 20 percent of underweight patients that underwent coronary artery bypass surgery died in the hospital, compared with 3 percent of obese patients.
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