We know that our lifestyle affects our health. We've heard it a million times before. Some of us take it more seriously than others. What we haven't really heard much of is how this relates to the inherited illnesses that people are at-risk of getting. Interestingly, again, it is actually lifestyle that significantly affects our chance of actually getting the illness that we're at risk of. For instance, someone born with a BRCA mutation, isn't necessarily going to get breast cancer. They are more at risk of...