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Body composition and longevity: what to measure

Healthspan is about staying strong and mobile, not only about adding years. These are the body measurements worth tracking over time.

Short answer

Body composition describes how the body divides into muscle, fat, water and bone. For healthspan, the useful measurements are muscle mass by segment, body fat and visceral fat level, body water and posture, tracked as a trend over time. A body scan gives a baseline, and a re-scan every 12 weeks shows the direction. Reports are for reference, not a medical diagnosis.

Last updated: November 2026

Why healthspan, not lifespan

Healthspan is the part of life spent in good function. Strength, balance and movement are what most people want to keep, and they depend on muscle, on where fat is carried and on how the body is aligned.

Nobody can promise a longer life. What you can do is measure, track and act.

What to measure

  • Muscle mass, whole body and by segment
  • Body fat percentage and visceral fat level
  • Body water and the ECW ratio
  • Basal metabolic rate (BMR)
  • Circumferences, including waist-to-hip ratio
  • 3D posture, plus shoulder and neck mobility
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Why the trend matters more than one number

A single scan is a starting point. What is useful is the change between scans taken under similar conditions. A re-scan every 12 weeks shows a clear trend over time without chasing small day-to-day changes.

How a Visbody scan fits

Visbody M50, M60 and T55 report body composition, 3D posture, circumferences and shoulder and neck mobility in one session. Reports are for reference, not a medical diagnosis.

Visbody M60 sample report
Visbody M60 3D body scanner

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