Genetic progress: destiny in our hands?

Our DNA allows us to find clues about our ethnic origins, to detect our predispositions to disease, to recognize our parentage. Sometimes, its investigation reveals secrets that change the course of a life. In a context where scientific research is exploding, where a genetic test can easily be carried out from a saliva sample for a few dozen francs, are we ready to receive all this information? How can we interpret it correctly?