[Direct-to-consumer genetic testing through Internet: marketing, ethical and social issues].

We probably did not anticipate all the consequences of the direct to consumer genetic tests on Internet, resulting from the combined skills of communication and genomic advances. What are the commercial strategies used by the companies offering direct-to-consumer genetic tests on Internet and what are the different social expectations on which they focus? Through a quantitative and qualitative analysis of the web sites offering such tests, it seems that these companies target a triple market based on: the "healthism" which raises health and hygiene to the top of the social values; the contemporary demands of the users to become actual actors of health decisions; and finally on the need for bio-social relationships. These three commercial strategies underlie various ethical and societal issues justifying a general analysis.