658. This Is Your Brain on Supplements

We all want to stay sharp, and forestall the cognitive effects of aging. But do brain supplements actually work? Are they safe? And why doesn’t the F.D.A. even know what’s in them? (Part one of “ The Freakonomics Radio Guide to Getting Better .”) SOURCES: Marty Makary , commissioner of the Food and Drug Administration. Peter Attia , physician, author, and host of The Peter Attia Drive . Pieter…