DEXA is FDA-approved and quantifies your lean, fat, and bone mass (to identify osteoporosis), and visceral fat (which correlates to your risk for hormonal imbalances and disease)
Common alternative methods, such as BMI, Bioimpedance, Bod Pod, and hydrostatic weighing, are often used incorrectly as a surrogate for body composition health. But they can be dangerously misleading.
For example, if you have a BMI of 25 kg/m2, you may have a body fat percentage anywhere from 10-35 percent. If you use other alternative methods, you may see a margin of error range from 5 to 15%.