Epigenetics invites, by its specific characteristics, to reflect on a variety of questions relating to public policies in a logic of “sustainable health” but also of “lasting respect” for fundamental rights. Thus, preserving a sustainable environment means placing the prospect of a longer human life in a logic of better quality of life, of “sustainable health”, but it is also a matter of public policy. And, if the public policies also have a direct impact on fundamental freedoms, other factors also play a decisive role in this regard, accentuating the specificity of genetic data.