DEXA Scan Explained: Bone Density, Visceral Fat, and Longevity Medicine

A DEXA scan (dual-energy X-ray absorptiometry) is widely considered the gold standard test for evaluating bone density and body composition. In longevity medicine, DEXA provides insight into several key markers of long-term health including bone strength, muscle mass, and visceral fat.

Unlike simple scale weight or BMI measurements, DEXA offers a far more accurate picture of how the body is changing with age.

What a DEXA Scan Measures

• Bone density and fracture risk
• Lean muscle mass
• Total body fat
• Visceral fat surrounding internal organs
• Body composition distribution

These measurements help physicians identify risks related to osteoporosis, metabolic disease, and age-related muscle loss.

Why DEXA Matters for Longevity Medicine

Body composition is one of the strongest predictors of long-term metabolic health. Increasing visceral fat and declining muscle mass are associated with insulin resistance, cardiovascular risk, and reduced physical resilience.

DEXA helps detect these changes early so patients can take action sooner.

DEXA Testing at HormoneSynergy®

HormoneSynergy® Longevity Medicine offers advanced DEXA Bone Density & Visceral Fat Analysis in Portland and Lake Oswego.

DEXA testing is often integrated with broader longevity medicine evaluations including metabolic testing, hormone assessment, and preventive cardiology.

Learn more in our complete hub article: Longevity Medicine: A Preventive Guide to Healthspan, Diagnostics, and Healthy Aging.

Frequently Asked Questions

How long does a DEXA scan take?

Most scans take about 10–15 minutes and require minimal preparation.

Is DEXA safe?

DEXA uses very low radiation exposure and is considered safe for routine clinical evaluation.

What makes DEXA different from BMI?

BMI estimates weight relative to height, while DEXA directly measures fat, muscle, and bone.