Is the body mass index a better predictor than body fat?
Although body mass index is useful because it is easy to measure it has been shown in a recent publication that body fat may be a better method to evaluate obesity (see Ten-year comparison of BMI, body fat, and fitness in the workplace, Am J Ind Med 2006 49(4) 223-230 and Relationship between adiposity and body size reveals limitations of BMI, Am J Phys Anthropol.