About us


Our health is our most precious asset. Today, it is one of the most talked about subjects in the media and deserves all the attention it can get. In the current context, it would appear that the "Know Thyself" motto, borrowed by Socrates on the Temple of Apollo at Delphi, is more feasible than knowing your own environment. For Zayho, this is inconceivably ridiculous. It is with this aim in mind that Zayho was created, making it possible for every individual to acquire a power that you cannot put a price on but which should be accessible to everyone: knowledge.

The objective of the products offered by Zayho is to make it possible for every individual to answer this vital question: Is my health, and the health of my loved ones in danger on a daily basis?

We also want to be a vector of information so that, via our site, you can expand your knowledge of many pollutants or drugs.


For Zayho, the respect of your privacy on the web is a fundamental right. And the trust you place in us, in view of the personal nature of the tests we offer, is essential and sacred.

This is why we are careful to guarantee you on-line security as rigorously as we can.

We do not sell or hire out our e-mail files, or any other information collected from our web sites that may make it possible to identify people. Zayho does not share and will never, in any way at all, pass on its e-mail files to other organisations. 

We temporarily keep the messages and name and address details of people who have contacted us to ask for specific information or advice, in case we need to contact them at a later date to provide them with extra information. However, we do not transmit this information to anyone else, and we will not use this information for any other purpose.

In accordance with article 34 of the "Information Technology and Civil Liberties" law, you have the right to access, modify, rectify and delete any data related to you.

To exercise this right, please contact us at this address:

Siret (company registration) number: 509 202 941 000 19
CNIL (National Commission for Information Technology and Liberties – French Data Protection Authority) declaration number: 1333 158