In this study, we propose to determine the effect of weight loss on amount of body fat, and on body fat distribution, in severely obese patients. We also want to determine what measurements (waist, hip or thigh circumference) best show the changes in body fat and fat distribution in this group. Most importantly, we want to relate the changes in body measurements to changes in health indicators (blood cholesterol, blood pressure, blood sugars, liver function). With the findings of this study, clinicians should be able to predict an improvement in health based on a change in waist, hip or thigh size. Because this is a pilot study, we will focus on women, who make up the bulk of our clinic population. We will also focus on racial differences between Caucasians and Blacks.