Today, most psychiatrists rely on their education and experience to choose which of the dozens of FDA-approved antidepressants is likely to work best for a particular patient. But human biology (and especially the brain) is complex. So often, it’s not until a doctor’s second (or third or fourth…) “guess” that they land on a medication that’s effective. Now, psychiatrists can use something far more concrete to guide their antidepressant decisions: a patient’s DNA. Read more here.