Even though people pretend that medical records are privileged information, anyone can already get their hands on them.
Early on, when you're working in a new area of science, you have to think about all the pitfalls and things that could lead you to believe that you had done something when you hadn't, and, even worse, leading others to believe it.
Genomics are about individuals. It's about what's specific to you, not your siblings, not your parents - each of us is totally unique. We will only see that uniqueness by drilling down to the genetic code.
One of the things about genetics that has become clearer as we've done genomes - as we've worked our way through the evolutionary tree, including humans - is that we're probably much more genetic animals than we want to confess we are.
I thought we'd just sequence the genome once and that would be sufficient for most things in people's lifetimes. Now we're seeing how changeable and adaptable it is, which is why we're surviving and evolving as a species.