From the point of view of public policy, where I would draw the line is the point at which the insurance companies have access to information about your current situation. They ask you about your historical medical information. They ask you about your current information; what hospitalizations you've had, what drugs are you taking now, whether you drink or smoke, they weigh you, they do all those kinds of things.
The difference between that and the results of genetic testing is that those results indicate, to a greater or lesser extent and with greater or lesser accuracy, what might happen in the future. As public policy-makers, I think if we are to draw a line between what is reasonable to provide to somebody who is assessing risk and what is across the line, I think the proper place is there.