Vital signs
Weight
LOINC 29463-7 · kg
What it is
Weight is your body mass. Tracked over time, it reflects trends in body composition, hydration and overall health.
Why it matters
It is a basic health measure, most useful as a trend and alongside waist size and body composition rather than a single number.
What high values can mean
A higher value or upward trend may reflect gains in fat, muscle or fluid; context (waist, body fat) helps interpret it.
What low values can mean
A lower value or unintended downward trend can matter, especially if rapid or unexplained.
How to improve it
Balanced eating, regular activity, good sleep and stress management support a healthy, stable weight over time.
Food & lifestyle
A mostly whole-food diet, adequate protein, regular activity and good sleep support a healthy weight; avoid crash diets.
Preparing for the test
Weigh at a consistent time, ideally in the morning after using the bathroom, in similar clothing.
When to talk to a doctor
Discuss unexplained or rapid weight change with a doctor, especially with other symptoms.
Related markers
Sources
- CDC
- MedlinePlus (NIH)
Content reviewed on June 26, 2026
Medical disclaimer
This content is for educational purposes only. It is not medical advice and does not diagnose, treat, or prevent any condition. Reference ranges vary between laboratories — always use the range printed on your report and discuss your results with a healthcare professional.
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