Your doctor says everything looks fine, but you still feel terrible. The problem might not be your health but how labs define “normal.” Understanding the difference between normal and optimal could ...

Run-of-the mill? Middle of the road? Typical? The chance that you are correct is vanishingly small. If you're a clinician, like me, you get a LOT of medical questions. While we've all been asked to ...

DEAR DOCTOR K: Last week I received the results of some recent blood work. A few of my values fell just outside the normal range. My doctor says it’s fine, but I’m still worried. Do I need to be? DEAR ...