Maybe it's the cold plunge everyone at your gym won't stop talking about. Maybe it's the statin your doctor mentioned, or a supplement making the rounds in your group chat. You go looking for a straight answer and find a stack of studies that contradict each other, plus experts who read them in completely different ways.
Dr. Anupam Jena works in exactly that mess. He's a professor of health care policy at Harvard Medical School, an internist at Massachusetts General Hospital, an economist, and host of the Freakonomics, M.D. podcast. We asked him how he personally sorts through shaky evidence and decides what's worth trying and who to believe.