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An hydrogen atom with an extra piece
Ordinary hydrogen has a proton in the nucleus. Deuterium has a proton and a neutron, hence it is heavier. It is one of the natural forms of hydrogen and appears in water, food and organisms in small amounts.
What does stable mean?
A stable isotope is not radioactive: its nucleus does not decay through emission of ionizing radiation. This is the meaning of the term. It does not say that a chosen concentration is beneficial, necessary, or suitable for a particular person.
Deuterium exists in natural water
Deuterium is not an exotic ingredient. It appears in the water cycle, and the proportions can vary slightly between regions, seasons, and sources. In isotopic documentation, values in ppm and other specialized units may appear.
Why does precise language matter?
It is correct to say that deuterium is stable. It is not correct to infer solely from this a promise of prevention, performance, or treatment. Context, concentration, and specific study make the difference.
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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