Notes from
Budapest
5th International Congress on Deuterium Depletion · Hungary
In late April, Anthony travelled to Hungary for the 5th International Congress on Deuterium Depletion. Here is an honest account of what it was and what he took from it.
A small conference in Hungary
The congress runs every two years in Budapest. Hungary has been the centre of this research since the early 1990s, so it is the closest thing the field has to a home.
The 5th International Congress on Deuterium Depletion was held over two days, 22 and 23 April 2026, at a venue overlooking the Chain Bridge and the Danube. It is a small conference: two days of sessions from early morning, an international group of researchers and clinicians, and enough time between sessions to actually talk to people.
Anthony went for a straightforward reason. We sell a product built on this research, and we would rather understand it directly than through summaries. That means reading the papers, and it means sitting in the room while the people who wrote them argue about what they mean.
Sessions ran across mechanism, measurement and clinical research. A good deal of it concerned methodology rather than findings: how deuterium is measured, what the limitations of existing study designs are, and where the field needs better trials. That last point came up more than you might expect.
Anthony met Dr Gábor Somlyai, the Hungarian biochemist whose group began this research in the early 1990s and who organises the congress, and Dr László G. Boros, Professor of Pediatrics at UCLA. Both have published extensively in the field.
We are not going to tell you what either of them thinks about our product, because we have not asked and it would not be appropriate to imply. They are researchers, not endorsers.
Three things, and none of them a product claim
Two days of sessions is a lot of material. These are the observations that have stayed with us.
The measurement problem is the real problem
Almost nobody has ever had their deuterium level measured. There are no established clinical reference ranges, and the instruments live in laboratories rather than clinics. Until that changes, a great deal of this field is working with less information than it would like.
The physics is not in question
Deuterium exists, it is measurable, it behaves differently from ordinary hydrogen because of its mass, and it can be industrially separated from water. What that means for a person drinking the water is a separate question, and an open one.
Careful language matters
Two days of listening to researchers discuss the limitations of their own study designs is a clarifying experience. It is a large part of why Yavelle describes its water by what it is, and makes no health claims for it.
Congress Moments
Nothing dramatic
We will keep reading the literature, keep publishing it alongside the criticism of it, and keep describing our water by what it is rather than by what it might do.
Our own water is made in the USA and independently laboratory tested for its deuterium level before it goes on sale. That much we can state plainly.
If you want to read the field yourself, our research page lists the published studies with links to primary sources, grouped by whether the work was done in humans, animals or cell cultures, and including the published critiques. We have not curated it to show you only the supportive half.
The next congress is in 2028.
Read the researchThis post is an account of a scientific conference. Yavelle is not registered as a therapeutic good in any territory, and no health claims are made for it.
Yavelle 25ppm Deuterium-Depleted Water is a packaged food. It is not a therapeutic good and is not intended to diagnose, treat, cure or prevent any disease. Information on this page is general and is not medical advice. If you have a health condition or are undergoing treatment, speak with a qualified health practitioner.