1. A method for determining visceral fat mass of a body, the method comprising: performing a dual-energy X-ray scan of a body; generating at least one dual-energy X-ray image of the body from the dual-energy X-ray scan of the body; identifying a region of interest on the at least one dual-energy X-ray image of the body for determining visceral fat mass of the body; wherein the region of interest is separated into a superior section and an inferior section; determining a subcutaneous fat mass for each of the superior section and the inferior section of the region of interest; and determining a visceral fat mass for the region of interest based on the determined subcutaneous fat mass for each of the superior section and the inferior section; wherein each of the superior section and the inferior section is separated into an anterior portion and a posterior portion.