What is belly fat? Belly fats are technically coined as central obesity (as they accumulate in the central part of the body-the stomach area). This "apple-shaped" obesity is the accumulation of fat deposits in between the internal organs in the torso. The result? Waist size increase. Although there are they don’t give any tips on how to lose belly fat fast, recent studies have shown that there is a strong link between belly fat and cardiovascular diseases. While belly fat can be obvious to the eyes even by just looking at the body, the severity of such condition cannot and must be examined by taking waist and hip measurements. The absolute waist circumference and the waist-hip ratio are both used as measures for belly fat. In the scientific experiment known as the National Health and Nutrition Examination Survey (NHANES III)-waist circumference explained obesity-related health risk far better than the body mass index when metabolic syndrome was taken as an outcome measure.