A DEXA (Dual-Energy X-ray Absorptiometry) scan is a medical imaging test that measures bone density and body composition, including fat, muscle, and bone mass.

Individuals looking to accurately assess their body composition, such as athletes, people monitoring their health or weight loss progress.

Wear loose, comfortable clothing without metal zippers or buttons. Avoid taking calcium supplements 24 hours before the scan. Additionally, for maximum accuracy, you’ll want to do the scan under the same circumstances each time. So, if you fast for the first scan, you may want to fast for subsequent scans, so that changes in your body composition are a reflection of actual change, rather than the presence of food.

Absolutely, DEXA scans are generally safe as they involve very low levels of X-ray radiation, typically equivalent to the amount one would receive from a day of natural environmental exposure. However, it's crucial to note that, as a precautionary measure, DEXA scans are not recommended for pregnant women.