Chapter 8 of 10·7 min left in book
Chapter 8
Measure What Matters
Measurement should reduce uncertainty and improve decisions. If it produces fear without changing the plan, it is not doing its job.
Use a five-part dashboard:
A five-part monitoring dashboard
- Symptoms and intake
- Can you eat and drink enough to function?
- Strength
- Track one safe, repeatable strength marker.
- Everyday function
- Notice meaningful changes in ordinary tasks.
- Weight and waist trend
- Use trends, not one isolated reading.
- Body composition
- Use it when the result will answer a clinical question or change the plan.
- Read together
- No single measure carries the whole interpretation.
No single measure has to carry the whole interpretation.
Symptoms and intake. Can you eat and drink enough to function? Are nausea, vomiting, diarrhea, constipation, early fullness, or food aversion worsening? Are fluids and protein becoming consistently difficult?
Strength. Track a safe, repeatable movement that fits your health and goals. The measure might be the resistance and repetitions used in a familiar exercise, but it can also be a clinician-supervised strength test.
Function. Follow one ordinary task: chair rises, stairs, carrying groceries, walking a usual route, or another meaningful activity. Use the same task and conditions when possible.
Weight and waist trend. Repeated measurements under similar conditions can show direction. They do not need to become daily judgments. If weighing increases anxiety or disordered behavior, choose a clinician-supported alternative.
Body composition. Use BIA or DXA when the result is likely to inform care. Compare serial measurements cautiously and keep the method and testing conditions as consistent as practical.
For BIA, hydration matters. So do recent food, bladder status, recent exercise, alcohol, illness, skin temperature, and the device’s equations. A reasonable clinic protocol uses the same device, a similar time of day, similar hydration, and similar pre-test conditions. Even then, focus on direction across several measurements rather than one jump.
DXA is widely used in research and can estimate regional and whole-body fat and lean soft tissue. Different machines, software, positioning, and analysis can still affect results. Repeat testing should have a reason; more scans do not automatically create better care.
Your monitoring plan
Before acting on a scan
Ask four questions when a number changes:
- Was the same method used under similar conditions?
- Did strength or function change in the same direction?
- Were intake, symptoms, illness, or hydration different?
- Would repeating or acting on this measurement change the care plan?
The most reassuring pattern is not necessarily an unchanged lean-mass number. It may be substantial fat loss with stable or improving strength, preserved function, adequate intake, and a clinically reasonable lean-mass trend. The concerning pattern is a convergence of worsening intake, progressive weakness, declining function, rapid change, and a consistent composition trend.
Numbers become useful when they are interpreted together.