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Two ways to express a proportion
Percentages mean parts per hundred, and ppm means parts per million. Both can describe concentrations, although the scale used is very different. In conversations about deuterium, ppm is often more commonly encountered.
Why language precision matters
Changing the unit without explanation can make a difference seem larger or smaller than it is. A responsible label states the unit and does not leave the reader to assume what the number represents.
A unit is not a medical conclusion
Regardless of whether the value is written in ppm or percentages, it describes the composition of a sample. It does not directly indicate who would benefit, what dose would be relevant, or if there is a clinical result.
Quick check
When you see a number, ask: what is being measured, in what unit, by what method, and for which batch? These four questions are more useful than the isolated number.
Sources and further reading
These references explain the subject and the limits of the evidence. A reference is not proof that a product treats a disease.
Editorial transparency
Published by MECRO SYSTEM SRL. AI tools assist drafting and translation. No named medical reviewer is attributed to this article. This educational material does not replace individual medical advice. Report an error using the contact page, including the article address and the passage concerned.
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