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If you are using GLP-1 weight loss medications such as Mounjaro (Tirzepatide) or Wegovy (semaglutide), the number on the scale only tells part of the story.
Successful weight loss is not just about losing weight, it is about losing body fat while protecting muscle and maintaining long-term metabolic health.
A DEXA body composition scan is one of the most accurate ways to measure what your body is really made of and helps ensure your weight loss is healthy, effective, and sustainable.
What Is a DEXA Scan?
A DEXA (Dual-Energy X-ray Absorptiometry) scan is considered the gold standard for body composition analysis. It provides precise information about:
- Body fat percentage
- Muscle mass
- Visceral fat (fat around the organs)
- Bone density
The scan uses very low-dose X-ray technology, with radiation exposure similar to a short plane flight. It is safe, quick, and non-invasive.
Why DEXA Is Helpful During Weight Loss
When you lose weight, your body can lose fat, muscle, or both.
Ideally, a healthy weight loss programme should:
✔ Reduce body fat
✔ Protect muscle mass
✔ Improve metabolic health
If muscle mass is lost during dieting, it can slow your metabolism and make it harder to maintain weight loss long-term.
A DEXA scan allows your medical team to see exactly what type of weight you are losing, so your programme can be adjusted if needed.
Understanding Visceral Fat
DEXA scans can also measure visceral fat, which is the fat stored around your internal organs.
High levels of visceral fat are linked to increased risk of:
- Heart disease
- Type 2 Diabetes
- Metabolic syndrome
Reducing visceral fat is one of the most important health benefits of medically supervised weight loss.
Protecting Muscle During Weight Loss
Muscle is essential for:
- Maintaining a healthy metabolism
- Strength and mobility
- Blood sugar control
- Healthy ageing
During weight loss, your care team may recommend:
- Resistance or strength training
- Adequate protein intake
- Regular body composition monitoring
DEXA scans help ensure that fat is being reduced while muscle is preserved.
Additional Assessments That Can Help
DEXA scans are often combined with other tests to provide a full picture of your metabolic health.
Resting Metabolic Rate (RMR)
Measures how many calories your body burns at rest, helping personalise your nutrition plan.
3D Body Scan
Uses infrared sensors to measure body shape and circumferences, allowing you to visually track progress.
FatMax Exercise Test
Identifies the optimal heart rate zone for burning fat during exercise.
Bone Density Assessment
DEXA can also measure bone health and screen for conditions such as Osteopenia and Osteoporosis.
Supporting Long-Term Results
The goal of medical weight management is not just to lose weight , it is to improve health and maintain results long-term.
DEXA scans provide clear, reliable information about your body composition, helping you and your healthcare team make informed decisions throughout your journey.
By understanding how your body is changing, you can focus on losing fat, protecting muscle, and achieving sustainable results.
