肥胖(obesity)的定义：
Obesity has been more precisely defined by the National Institutes of Health (the NIH) as a BMI of 30 and above. (A BMI of 30 is about 30 pounds overweight.) The BMI (body mass index), a key index for relating body weight to height, is a person's weight in kilograms (kg) divided by their height in meters (m)squared. Since the BMI describes the body weight relative to height, it correlates strongly (in adults) with the total body fat content.
Ha ha, when i started resident decade ago, 250 lb would raise the red flag, now a days pt 350+ lbis not a big deal. Seeing 400+lb all the time. People don't realize obesity is a disease and worse thing is it can kill you.
