DEXA Scan London: The Most Accurate Way to Measure Body Fat, Muscle & Health
- Rick Miller
- 3 hours ago
- 3 min read
Introduction
Most executives trying to improve their health rely on:
Weight, BMI and mirror feedback
These aren't always bad per say, but the problem?
None of these tell you what’s actually going on inside your body.
You can:
lose weight but lose muscle
look “healthy” but carry high visceral fat
train hard with no measurable progress
This is where a DEXA scan changes everything.
What Is a DEXA Scan?
A DEXA (Dual-Energy X-ray Absorptiometry) scan is a medical-grade imaging test that measures:
body fat percentage
lean muscle mass
bone density
visceral fat
DEXA scans are considered the gold standard for body composition analysis.
What Does a DEXA Scan Measure?
Body Fat Percentage
Not just how much fat you have but where it is located.
This allows for: accurate fat loss tracking and realistic goal setting
Lean Muscle Mass
DEXA shows: total muscle mass and imbalances between sides
Critical for performance and injury prevention
Visceral Fat
This is the most important metric.
Visceral fat: surrounds organs, drives metabolic risk and impacts hormones and it cannot be seen externally.
Bone Density
Useful for: long-term health and identifying early bone loss.
Why a DEXA Scan Matters (Especially for Men)
Some men have access to other (hint: inferior) body composition methods which we've written about in our article: DEXA scan London vs Other Body Composition Tests: The Executive’s Guide.
The reality is that most men rely on: scale weight alone
But weight doesn’t tell you:
fat vs muscle
internal fat
metabolic risk
This leads to:
frustration
poor decisions
plateaued progress
DEXA removes guesswork.
Common Questions About DEXA Scans
Is a DEXA scan better than BMI?
Yes, significantly. BMI doesn’t distinguish between fat and muscle.
DEXA gives a precise breakdown of body composition.
How accurate is a DEXA scan?
DEXA is one of the most accurate methods available for measuring body composition, far superior to scales or handheld devices.
Who Should Get a DEXA Scan?
A DEXA scan is particularly valuable if you:
are trying to lose fat
want to improve performance
feel “stuck” despite effort
want objective health data
especially for high-performing professionals who want clarity, not guesswork.
How We Use DEXA at Miller Health
DEXA is not used in isolation.
Combined With Metabolic Testing
We assess:
how your body utilises energy sources
how efficient your metabolism is
Combined With Blood Testing
We look at:
hormones
metabolic markers
nutrient status
This gives a complete picture of:
body composition
metabolic function
performance potential
What To Do With Your Results
Step 1 — Understand Your Baseline
Know exactly:
body fat %
visceral fat
muscle mass
Step 2 — Build a Targeted Plan
Based on your data:
fat loss strategy
muscle optimisation
metabolic improvement
Step 3 — Track Progress Properly
Repeat scans allow:
objective progress tracking and data-driven adjustments
Frequently Asked Questions
How long does a DEXA scan take?
Typically 10–15 minutes. The process is quick, non-invasive, and requires no preparation.
Is a DEXA scan safe?
Yes. Radiation exposure is extremely low — significantly less than many common medical imaging procedures.
How often should I get a DEXA scan?
Every 8–12 weeks is ideal when tracking changes in body composition.
Can a DEXA scan detect visceral fat?
Yes. This is one of its most valuable features and a key reason it’s used in clinical settings.
The Bottom Line
If you’re serious about improving your health or physique:
Guesswork won’t get you there.
DEXA gives:
clarity
precision
direction
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