The gold standard in body composition analysis. Dual-energy X-ray absorptiometry measures fat mass, lean mass, bone mineral density, and visceral fat with clinical-grade precision — giving you the most accurate picture of what's happening inside your body.
DEXA scanning is the most validated method for body composition analysis. Here's what it reveals and why it matters.
DEXA measures three distinct compartments — fat mass, lean mass, and bone mineral content — in a single scan. It provides regional breakdowns so you can see exactly where fat and muscle are distributed across your body.
Visceral adipose tissue (VAT) surrounding your organs is the most metabolically dangerous type of fat. DEXA quantifies VAT precisely, giving you a critical biomarker that standard scales and BMI completely miss.
DEXA is the WHO-recommended standard for diagnosing osteoporosis and assessing fracture risk. Early detection of bone mineral density loss allows for intervention before fractures occur — especially critical after age 40.
DEXA reveals left-right muscle imbalances and regional fat distribution patterns that may indicate injury risk, compensatory movement patterns, or hormonal imbalances that need clinical attention.
With high reproducibility (CV <1% for bone, ~1-2% for soft tissue), serial DEXA scans let you objectively track the effects of nutrition, training, and medical interventions over time — beyond what the scale can tell you.
Research shows that regional body composition — particularly high trunk fat and low limb lean mass — independently predicts mortality risk. DEXA provides these regional measurements that BMI and weight alone cannot capture.
For accurate tracking over time, schedule your scans at the same time of day and under similar conditions. Morning scans after an overnight fast yield the most consistent baseline readings.
Maintain normal hydration but avoid eating for 2-4 hours before your scan. Avoid heavy exercise the morning of your scan, as fluid shifts from exercise can affect soft tissue measurements.
Wear lightweight, metal-free clothing. Remove all jewelry, belts, and items with zippers or snaps. You'll lie flat on the scanner table for approximately 6-10 minutes.
The DEXA scanner passes two low-dose X-ray beams over your body. You simply lie still — the scan is painless, noninvasive, and typically takes under 10 minutes. Total radiation exposure is less than a day of natural background radiation.
Your ALYZE practitioner will walk you through your results — body fat percentage, lean mass by region, bone density T-scores, visceral fat, and how these compare to your previous scans and age-matched norms.
Important: DEXA scanning uses a very low dose of ionizing radiation (approximately 0.001 mSv per scan). It is not recommended during pregnancy. If you are pregnant or suspect you may be, inform your ALYZE practitioner before scheduling. Individuals with recent barium or contrast dye studies should wait 7-10 days before a DEXA scan.
DEXA is the most extensively validated body composition measurement tool in clinical medicine. These are key studies.
Recent peer-reviewed studies on DEXA body composition, automatically sourced from PubMed.
Your DEXA scan is one piece of your complete diagnostic picture — integrated with bloodwork, metabolic testing, and clinical assessment to build your personalized health protocol.
Bountiful, Utah · alyze.health
The information provided on this page is for general informational and educational purposes only and is not intended as medical advice. The research cited is from peer-reviewed journals and is presented for educational purposes. Individual results may vary. Always consult with a qualified healthcare provider before beginning any new wellness practice, including body composition scanning.
