Illustrative image. DDW Glossary: 12 terms to understand
Illustrative image. · AI
On this page
  1. Deuterium, Isotope, DDW
  2. Heavy water, natural water, ppm
  3. Lot, analysis, traceability
  4. Placebo, randomization, replication

Deuterium, Isotope, DDW

Deuterium is a stable isotope of hydrogen. An isotope is a variant of the same element with a different number of neutrons. DDW is the abbreviation for deuterium-depleted water, that is, water with reduced deuterium content.

Heavy water, natural water, ppm

Heavy water is enriched in deuterium, unlike DDW. Natural water is water with isotopic ratios found in the environment. PPM means parts per million and expresses a concentration.

Lot, analysis, traceability

A lot is an identifiable group of products made under similar conditions. An analysis useful should be able to be linked to lot, method and date. These are verifiable data, not promises.

Placebo, randomization, replication

A placebo helps with comparison. Randomization distributes participants randomly. Replication means obtaining similar results from independent teams. They support confidence in a conclusion.

Disclaimer: This material is educational. It does not diagnose, treat, or replace the recommendations of a health professional.

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.

Editorial policy and corrections · Contact

Illustrative image. What is deuterium-depleted water?What is deuterium-depleted water?Introductory guide to deuterium-depleted water: definition, difference from heavy water and limits of health claims.Illustrative image. How is deuterium measured in waterHow is deuterium measured in waterWhat does a deuterium analysis mean, why does the ppm unit appear, and what questions deserve to be asked about a declared result.Illustrative image. PPM versus percentages: how to read concentrationsPPM versus percentages: how to read concentrationsThe difference between ppm and percentages explained simply for correct reading of labels and water analyses.Illustrative image. pH, minerals and deuterium: three different thingspH, minerals and deuterium: three different thingsWhy pH, mineral content, and deuterium concentration should be read separately on a water label.Illustrative image. Heavy water versus DDW: differences explainedHeavy water versus DDW: differences explainedUnderstand the difference between heavy water, deuterium and deuterium-depleted water, without confusion or health promises.Illustrative image. PPM, isotopes and a number that needs contextPPM, isotopes and a number that needs contextWhat does ppm on the label of deuterium-depleted water indicate and why the concentration is not the only relevant thing.Illustrative image. Deuterium, diet and metabolism: how we read hypothesesDeuterium, diet and metabolism: how we read hypothesesA balanced context about deuterium, diet and metabolism: what can studies explore and why hypotheses are not clinical recommendations.Illustrative image. Deuterium: what does "stable isotope" mean?Deuterium: what does "stable isotope" mean?A clear guide about deuterium in water: what is a stable isotope, where it appears naturally, and what this term does not mean.