For many years, the body mass index (BMI) was the most widely used indicator for assessing an individual's weight and health. But experts have been pointing out its shortcomings for some time. Although it was designed as an easy way to determine overweight and obesity, BMI does not take into account many factors that affect health, such as muscle mass, age, gender and body shape. That is why there is more and more talk about an alternative - the Body Curvature Index (ITZ), which is supposed to be a more accurate indicator of health risks.