There are things about ourselves we choose to know, things we would rather not know, and things we don't even realize are available for us to know. Genetics can fall somewhere in the middle. Some people are eager to know everything their DNA might reveal. Others understandably wonder whether knowing would simply give them something else to worry about. I understand both perspectives. But I have come to see genetic information somewhat differently. I don't think of it as a pre

Here’s a little secret about medicine: It changes its mind. And thank goodness it does. Not because doctors were foolish 30 years ago. Not because researchers were incompetent. And certainly not because your grandmother was trying to lead you astray when she insisted that whatever she was recommending had “been proven.” We simply don’t know what we don’t know. Medical advice is generally based on the best evidence available at the time. Then larger studies are conducted. Peop