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Interpreting DEXA Results
April 14, 2025

Why Fit Doesn’t Always Mean Healthy: The Hidden Risks Only a DEXA Scan Reveals

Think being fit means you’re healthy? Think again. Discover the hidden risks of visceral fat, muscle imbalances, and low bone density—and how a DEXA scan in San Francisco can reveal the truth.

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5 min read
Why Fit Doesn’t Always Mean Healthy: The Hidden Risks Only a DEXA Scan Reveals

You lift weights. You run. You look lean. So you're healthy… right?

Not necessarily.

Fitness and health aren’t always the same thing. You can appear fit on the outside while hidden imbalances, muscle deficiencies, or visceral fat quietly increase your risk of chronic disease and injury.

If you're serious about long-term health—not just aesthetics—you need to go beyond the mirror and the scale. A DEXA scan reveals the full picture of what’s happening inside your body—and it might surprise you.

The Hidden Risks Behind a "Fit" Physique

1. High Visceral Fat Despite a Lean Appearance

You can have visible abs and still carry high visceral fat—the dangerous fat wrapped around your organs.

Why it matters:

  • Increases risk of heart disease, insulin resistance, and inflammation
  • Not visible externally and can’t be tracked with a scale or calipers
  • Common in people with high stress, poor sleep, or poor diet despite exercise

Only a DEXA scan can detect visceral fat in grams, making it the gold standard for identifying this silent threat.

2. Muscle Imbalances That Lead to Injury

You might be strong—but are you balanced?

One-sided dominance or neglecting certain muscle groups (like glutes or core) can lead to:

  • Poor posture
  • Joint pain
  • Increased risk of strains and overuse injuries

DEXA scans break down muscle mass by region—left/right, upper/lower—so you can correct weak points before they cause problems.

3. Low Bone Density in Active People

Even athletes can have low bone mineral density, especially if they:

  • Undereat
  • Avoid strength training
  • Overdo cardio

Why it matters:

  • Increased risk of stress fractures
  • Potential development of osteopenia or osteoporosis
  • Reduced performance longevity

A DEXA scan provides an accurate measure of bone health, allowing for early intervention through diet and resistance training.

4. Muscle Loss During Fat Loss Phases

If you're cutting weight too aggressively, you may be burning through muscle instead of fat—lowering your metabolism and increasing the chance of fat regain later.

DEXA helps you:

  • Track lean mass retention during a deficit
  • Adjust your macros, training, and recovery in real time
  • Ensure you’re preserving muscle while dropping fat

Why the Scale and Mirror Aren’t Enough

Tool What It Shows What It Misses
Scale Weight only Fat vs. muscle, visceral fat, bone density
Mirror Aesthetics Internal health, muscle balance
Calipers/BIA Body fat % (estimated) Bone, organ fat, muscle distribution
DEXA Scan Full body composition data ✅ Nothing—it’s the gold standard

When to Get a DEXA Scan

  • Starting or changing a fitness program
  • After a fat loss or bulking phase
  • Every 4-8 weeks to track muscle and fat trends
  • If you’re experiencing fatigue, plateaus, or unexpected injuries

Book Your DEXA Scan in San Francisco at KALOS Today

Being fit on the outside doesn’t always mean you’re healthy on the inside. At KALOS, we offer precise DEXA scans in San Francisco to help you uncover hidden risks, improve performance, and stay healthy for the long run.

Schedule your scan today at KALOS—your journey to data-driven fitness starts now.

Schedule your DEXA scan today!

Bay Area residents trust KALOS to deliver results. We proudly serve the entire  Bay Area including the following locations: