If you are thinking of macro-societal impact... I think you have to ignore the specifics of this particular test and think of the impact of these sorts of test

If you are thinking of macro-societal impact... I think you have to ignore the specifics of this particular test and think of the impact of these sorts of test on medicine, culturally. For example, there's a sort of Principe in medicine that you shouldn't order tests unless you will action treatments based on results. For example, if you detect a risk of breast cancer that can only be avoided by mamosectamy, only do the test if you're willing to to the procedure. Otherwise, all you have is a more stressed out patient. Data gathering is totally different in medicine for such reasons. The big, relevant exception is cancer, where a statistical, risk estimating approach is commonplace. In any case, genetic testing (and other ambient data gathering) may give us good reasons to change this approach. It's a transition and taking a step from toy to medicine (this is what 23andme is doing) is en route to such a change. What could emerge downstream is personalized cancer screening protocols. Maybe you should start getting colonoscopies at age 20 and I should start at 60.