We all want to make good health decisions, but every day a new study comes out that seems to change the game. Fat’s bad for you; then it’s good. Count calories. Don’t. Add in all the marketing and news media, and it’s hard to tell the good stuff from the snake oil. James Hamblin is a doctor-turned-journalist, and in his writing for The Atlantic magazine he wades through the noise to find the signal. He joins us Tuesday to help us better understand how to listen to and take care of our bodies.