According to Ms. Hobson, "you'd think that would be a fairly straightforward question." However, according to a New England Journal of Medicine report, there seem to be conflicting reports from the CDC. Apparently, the CDC has a set of reports with one data and another set of reports reporting a different statistical data. Interestingly, one set of data seem to show that a certain segment of the American population gained an inch while dropping pounds.
There are a few other interesting information there including a government guide to measuring your BMI Body Mass Index. Body mass index (BMI) is a measure of body fat based on height and weight that applies to adult men and women. You can get the full story here.